Wilden PX8, PX15, PX4 Engineering, Operation & Maintenance

EOM

Engineering

Operation &

Maintenance

PX8

Sani o™ Hygienic Series
Metal Pumps

Where Innovation Flows

www.wildenpump.com

WIL-12310-E- 04

TO REPL ACE W IL-12310-E -0 3

TABLE OF CONTENTS

SECTION 1 CAUTIONS—READ FIRST! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

SECTION 2 WILDEN PUMP DESIGNATION SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

SECTION 3 HOW IT WORKS—PUMP & AIR DISTRIBUTION SYSTEM . . . . . . . . . . . . . . . . 3

SECTION 4 DIMENSIONAL DRAWINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

SECTION 5 PERFORMANCE

A. PX8 Performance Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Operating Principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

How to Use this Curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Rubber-Fitted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

TPE-Fitted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Full Stroke PTFE-Fitted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Full Stroke SIPD-Fitted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Reduced Stroke PTFE-Fitted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Reduced Stroke SIPD-Fitted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Reduced Stroke Ultra-Flex™-Fitted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

B. Suction Lift Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

SECTION 6 SUGGESTED INSTALLATION, OPERATION & TROUBLESHOOTING . . . . . . . 21

SECTION 7 ASSEMBLY / DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

SECTION 8 CLEANING - CIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

SECTION 9 EXPLODED VIEW & PARTS LISTING

PX8 Saniflo™ HS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

SECTION 10 ELASTOMER OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Section 1

CAUTIONS—READ FIRST!

CAUTION: Do not apply compressed air to the

exhaust port — pump will not function.

CAUTION: Do not over-lubricate air supply —

excess lubrication will reduce pump performance.
Pump is pre-lubed.

TEMPERATURE LIMITS:

Neoprene –17.7°C to 93.3°C 0°F to 200°F
Buna-N –12.2°C to 82.2°C 10°F to 180°F
Nordel
Viton® –40°C to 176.7°C –40°F to 350°F
Sanifl ex™ –28.9°C to 104.4°C –20°F to 220°F
Polytetrafl uoroethylene (PTFE)

4.4°C to 104.4°C 40°F to 220°F
Polyurethane –12.2°C to 65.6°C 10°F to 150°F
Tetra-Flex™ PTFE w/Neoprene Backed

4.4°C to 107.2°C 40°F to 225°F
Tetra-Flex™ PTFE w/Nordel® Backed

-10°C to 137°C 14°F to 280°F
Wil-Flex™ (Santoprene®)

-40°C to 107.2°C -40°F to 225°F

NOTE: Not all materials are available for all
models. Refer to Section 2 for material options
for your pump.

®

–51.1°C to 137.8°C –60°F to 280°F

CAUTION: Do not exceed 82°C (180°F) air inlet

temperature for Pro-Flo X™ models.

CAUTION: Pumps should be thoroughly fl ushed

before installing into process lines. FDA and
USDA approved pumps should be cleaned and/
or sanitized before being used.

CAUTION: Always wear safety glasses when

operating pump. If diaphragm rupture occurs,
material being pumped may be forced out air
exhaust.

CAUTION: Before any maintenance or repair is

attempted, the compressed air line to the pump
should be disconnected and all air pressure
allowed to bleed from pump. Disconnect all
intake, discharge and air lines. Drain the pump
by turning it upside down and allowing any fl uid
to fl ow into a suitable container.

CAUTION: Blow out air line for 10 to 20 seconds

before attaching to pump to make sure all pipeline
debris is clear. Use an in-line air fi lter. A 5µ (micron)
air fi lter is recommended.

CAUTION: When choosing pump materials, be

sure to check the temperature limits for all wetted
components. Example: Viton® has a maximum
limit of 176.7°C (350°F) but polypropylene has a
maximum limit of only 79°C (175°F).

CAUTION: Maximum temperature limits are

based upon mechanical stress only. Certain
chemicals will signifi cantly reduce maximum
safe operating temperatures. Consult Chemical
Resistance Guide (E4) for chemical compatibility
and temperature limits.

WARNING: Prevention of static sparking — If

static sparking occurs, fi re or explosion could
result. Pump, valves, and containers must be
grounded to a proper grounding point when
handling fl ammable fl uids and whenever
discharge of static electricity is a hazard.

CAUTION: Do not exceed 8.6 bar (125 psig) air

supply pressure.

CAUTION: The process fl uid and cleaning fl uids

must be chemically compatible with all wetted
pump components. Consult Chemical Resistance
Guide (E4).

NOTE: When installing PTFE diaphragms, it is

important to tighten outer pistons simultaneously
(t urning in opposite directions ) to ensure tight fi t.
(See torque specifi cations in Section 7.)

NOTE: Cast Iron PTFE-fi tted pumps come

standard from the factory with expanded PTFE
gaskets installed in the diaphragm bead of the
liquid chamber. PTFE gaskets cannot be re-used.
Consult PS-TG for installation instructions during
reassembly.

NOTE: Before starting disassembly, mark a line

from each liquid chamber to its corresponding air
chamber. This line will assist in proper alignment
during reassembly.

CAUTION: Pumps are available in both

submersible and non-submersible options. Do
not use non-submersible Pro-Flo X™ models in
submersible applications.

CAUTION: Tighten all hardware prior to installation.

WIL-12310-E-04 1 WILDEN PUMP & ENGINEERING, LLC

Section 2

WILDEN PUMP DESIGNATION SYSTEM

PX8 SANIFLO

™

HYGIENIC SERIES

51 mm (2") Pump
Maximum Flow Rate:
587 lpm (155 gpm)

LEGEND

PX8 / XXXXX / XXX / XX/ XX/ XXXX

MODEL

MATERIAL CODES

MODEL

PX8 = 51 mm (2")
XPX8 = 51 mm (2") ATEX

WETTED PARTS/
OUTER PISTON

SS = 316L STAINLESS STEEL
SZ = 316L STAINLESS STEEL/
NO PISTON

CENTER BLOCK

N = NICKEL PLATED ALUMINUM
S = 316 STAINLESS STEEL

AIR CHAMBERS

N = NICKEL PLATED ALUMINUM
S = 316 STAINLESS STEEL

AIR VALVE

N = NICKEL PLATED ALUMINUM
S = 316 STAINLESS STEEL

DIAPHRAGMS

VALVE OPTION

AIR VALVE

AIR CHAMBER

CENTER SECTION

WETTED PARTS & OUTER PIS TON

DIAPHRAGMS

BNU = ULTRA-FLEX™ BUNA
EPU = ULTRA-FLEX™ EPDM
FBS = SANITARY BUNA
(two yellow dots)
FES = SANITARY EPDM
(two blue dots)
FSS = SANIFLEX™
FWL = FULL STROKE SANITARY
WIL-FLEX™ IPD

1

1,3,4

FWS = SANITARY WIL-FLEX™
LEL = PTFE-EPDM BACKED
LAMINATE IPD

1,2,3,4,5

TEU = PTFE w/EPDM BACKUP
TSS = FULL STROKE PTFE

w/SANIFLEX™ BACK-UP
TSU = PTFE w/SANIFLEX™
BACK-UP

1,2,5

TWS = FULL STROKE PTFE

w/WIL-FLEX™ BACK-UP

GASKETS

SPECIALTY
CODE

(if applicable)

VALVE BALLS, FLAP VALVES,

1,5

MUSHROOM CHECK

1,5

1

1

FB = SANITARY BUNA
(red dot)
FE = SANITARY EPDM
(green dot)
FS = SANIFLEX™
FW = SANITARY WIL-FLEX™
SF = STAINLESS STEEL FLAP
TF = PTFE

1

TM = PTFE MUSHROOM
CHECK

1,2,5

MANIFOLD GASKET

FB = SANITARY BUNA-N

1,2

(red dot)

1,2,3,4

1,2

FE = SANITARY EPDM
(green dot)
FV = SANITARY VITON®

1,2

(one white/one
yellow dots)
TF = PTFE

1,2,3,4,5

1,3,4

1,3,4

1,3,4

1,3,4

1,5

1,3,4

1,3,4

1, 3, 4

NOTE:

1. Meets Requirements of FDA CFR21.177

2. Meets Requirements of USPClass VI

3. Required for EHEDG Certification

4. Required for 3-A Certification

5. Stainless flap valve not available with reduced stroke PTFE, reduced
stroke Ultra-Flex

TM

or reduced stroke Laminate IP diaphragms

SPECIALTY CODES

0770 SaniFlo HS
0771 SaniFlo HS, w /Swivel Stand
0772 SaniFlo HS, Wil-Gard 110V
0773 SaniFlo HS, Wil-Gard 22 0V
0774 HS, Wil-Gard 110V, w/Swivel Stand
0775 SaniFlo HS, Wil-Gard 220V, w/Swivel Stand
0778 SaniFlo HS, DIN Connection
0779 HS, w/Swivel Stand DIN Connection
0780 SaniFlo HS, Wil-Gard 110V DIN Connection

NOTE: MOST EL ASTOMERIC MATERIA LS USE COLORED DOTS FOR IDENTIFICATION.

®

Viton

is a registered trademark of DuPont Dow Elas tomers.

WILDEN PUMP & ENGINEERING, LLC 2 WIL-12310-E-04

0781 SaniFlo HS, Wil-Gard 22 0V DIN Connection
0782 SaniFlo HS, Wil-Gard 110V, w/Swivel St and DIN Connection
0783 SaniFlo HS, Wil-Gard 22 0V, w/Swivel S tand DIN Connection
0784 SaniFlo HS, SMS Connection
0785 SaniFlo HS, w/Swivel Stand SMS Connection
0786 SaniFlo HS, Wil-Gard 110V SMS Connection
0787 SaniFlo HS, Wil-Gard 22 0V SMS Connection
0788 SaniFlo HS, Wil-Gard 110V, w/Swivel St and SMS Connection
0789 SaniFlo HS, Wil-Gard 22 0V, w/Swivel S tand SMS Connection

Section 3

The Wilden diaphragm pump is an air-operated, positive displacement, self-priming pump. These drawings show fl ow pattern
through the pump upon its initial stroke. It is assumed the pump has no fl uid in it prior to its initial stroke.

CLOSED

OUTLET

BA

INLET

FIGURE 1 The air valve dir ects pre ssurized
air to the back side of diaphragm A. The
compressed air is applied directly to the
liquid column separated by elastomeric
diaphragms. The diaphragm acts as
a separation membrane between the
compressed air and liquid, balancing the
load and removing mechanical stress
from the diaphragm. The compressed
air moves the diaphragm away from
the center of the pump. The opposite
diaphragm is pulled in by the shaft
connected to the pressurized diaphragm.
Diaphragm B is on its suction stroke; air
behind the diaphragm has been forced
out to atmosphere through the exhaust
port of the pump. The movement of
diaphragm B toward the center of the
pump creates a vacuum within chamber B.
Atmospheric pressure forces fl uid into
the inlet manifold forcing the inlet valve
ball off its seat. Liquid is free to move
past the inlet valve ball and fi ll the liquid
chamber (see shaded area).

HOW IT WORKS—PUMP

OPEN

OPEN

OUTLET

BA

CLOSEDOPEN

FIGURE 2 When the pressurized diaphragm,
diaphra gm A, re aches t he limit of it s disc harge
stroke, the air valve redirects pressurized
air to the back side of diaphragm B. T he
pressurized air forces diaphragm B away
from the center while pulling diaphragm A
to the center. Diaphragm B is now on its
discharge stroke. Diaphragm B forces the
inlet valve ball onto its seat due to the
hydraulic forces developed in the liquid
chamber and manifold of the pump. These
same hydraulic forces lift the discharge
valve ball off its seat, while the opposite
discharge valve ball is forced onto its seat,
forcing fl uid to fl ow through the pump
discharge. The movement of diaphragm A
toward the center of the pump creates a
vacuum within liquid chamber A. Atmos­pheric pressure forces fl uid into the inlet
manifold of the pump. The inlet valve ball
is forced off its seat allowing the fl uid being
pumped to fi ll the liquid chamber.

INLET

CLOSED

OPENCLOSED

CLOSED

OUTLET

OPEN

BA

INLET

FIGURE 3 At completion of the stroke,
the air valve again redirects air to the
back side of diaphragm A, which star ts
diaphragm B on its exhaust stroke. As
the pump reaches its original starting
point, each diaphragm has gone through
one exhaust and one discharge stroke.
This constitutes one complete pumping
cycle. The pump may take several cycles
to completely prime depending on the
conditions of the application.

CLOSEDOPEN

WIL-12310-E-04 3 WILDEN PUMP & ENGINEERING, LLC

Section 4

DIMENSIONAL DRAWINGS

PX8 Saniflo™ HS Fixed

DIMENSIONS

ITEM METRIC (mm) STANDARD (inch)

A 460 18.1
B 213 8.4
C 577 22.7
D 902 35.5
E 955 37.6

F 51 2.0
G 579 22.8
H 363 14.3
J 559 22.0
K 46 1.8

L 401 15.8

M 351 13.8
N 318 12.5

P 356 14.0
R

ø10 ø0.4

Rev A

PX8 Saniflo™ HS Flap Valve Fixed

51 mm (2")

TRI-CLAMP

DISCHARGE

19 mm (3/4")
FNPT AIR
INLET

E

D

C

B

A

L

M

R

P

N

F

25 mm (1")
FNPT AIR
EXHAUST

51 mm
(2")
TRI­CLAMP
INLET

K

F

H

J

G

DIMENSIONS

ITEM METRIC (mm) STANDARD (inch)

A 460 18.1
B 160 6.3
C 577 22.7
D 955 37.6
E 1008 39.7

F 51 2.0
G 579 22.8
H 363 14.3
J 559 22.0
K 56 2.2

L 401 15.8

M 351 13.8
N 318 12.5

P 356 14.0
R

ø10 ø0.4

Rev A

WILDEN PUMP & ENGINEERING, LLC 4 WIL-12310-E-04

Section 4

DIMENSIONAL DRAWINGS

PX8 Saniflo™ HS Swivel

DIMENSIONS

ITEM METRIC (mm) STANDARD (inch)

A 460 18.1
B 247 9.7
C 612 24.1
D 938 36.9
E 989 38.9

F 51 2.0
G 615 24.2
H 498 19.6
J 693 27.3
K 46 1.8

L 401 15.8

M 351 13.8
N 394 15.5

P 432 17.0
R ø10 ø0.4

Rev B

PX8 Saniflo™ HS Flap Valve Swivel

DIMENSIONS

ITEM METRIC (mm) STANDARD (inch)

A 460 18.1
B 194 7.6
C 612 24.1
D 990 39.0
E 1042 41.0

F 51 2.0
G 615 24.2
H 498 19.6
J 693 27.3
K 56 2.2

L 401 15.8

M 351 13.8
N 394 15.5

P 432 17.0
R ø10 ø0.4

Rev B

WIL-12310-E-04 5 WILDEN PUMP & ENGINEERING, LLC

Pump Solids

Maximize Your Yield

Is your process limping along with a pump that wasn't

designed to transfer sanitary solids? Are your inspection,

cleaning, and maintenance costs too high? Are you looking

for a pump that is actually designed for your application?

Wilden has your answer. The Saniflo™ VC pump can trans-

fer your product without damage from bruising or shearing.

The pump is specifically designed to meet your performance

needs while minimizing cleaning and inspection time. Contact

us for a unique perspective and proven results. The Saniflo™

VC will handle any food product that you can dish out.

• 3 sizes available

• Solids passage to 152 mm (6")

• Stainless steel construction

• Only 2 moving parts

• Low liquid content requirement

• Complies with
USDA requirements

• Variable fl ow

• CE marked

• Low voltage directive by TÜV

• PED & machinery directive

WILDEN PUMP & ENGINEERING, LLC 6 WIL-12310-E-04

PX8

SANIFLO

PX8 SANIFLO HS PERFORMANCE

Section 5A

Pro-Flo X

The Pro-Flo X™ air distribution system with the

revolutionary Effi ciency Management System (EMS)

offers fl exibility never before seen in the world of

AODD pumps. The

patent-pending EMS

is simple and easy

to use. With the

turn of an integrated

TM

Operating Principle

control dial, the operator can select the optimal

balance of fl ow and effi ciency that best meets the

application needs. Pro-Flo X™ provides higher

performance, lower

operational costs

and fl exibility that

exceeds previous

industry standards.

AIR CONSUMPTION

$

$

$

Turning the dial
changes the
relationship
between air inlet
and exhaust
porting.

WILDEN PUMP & ENGINEERING, LLC 8 PX8 HS Performance

Each dial setting
represents an
entirely different
fl ow curve

Pro-Flo X™ pumps
are shipped from
the factory on
setting 4, which
is the highest
fl ow rate setting
possible

Moving the dial
from setting 4
causes a decrease
in fl ow and an even
greater decrease in
air consumption.

When the air
consumption
decreases more
than the fl ow
rate, effi ciency
is improved and
operating costs
are reduced.

Example 1

HOW TO USE THIS EMS CURVE

SETTING 4 PERFORMANCE CURVE

Figure 1 Figure 2

Example data point = Example data point =

This is an example showing how to determine fl ow rate and
air consumption for your Pro-Flo X™ pump using the Effi cien­cy Management System (EMS) curve and the performance
curve. For this example we will be using 4.1 bar (60 psig) inlet
air pressure and 2.8 bar (40 psig) discharge pressure and EMS
setting 2.

Step 1:

Identifying performance at setting 4. Locate

the curve that represents the fl ow rate of the
pump with 4.1 bar (60 psig) air inlet pressure.
Mark the point where this curve crosses the
horizontal line representing 2.8 bar (40 psig)
discharge pressure. (Figure 1). After locating
your performance point on the fl ow curve,
draw a vertical line downward until reaching
the bottom scale on the chart. Identify the fl ow
rate (in this case, 8.2 gpm). Observe location
of performance point relative to air consump­tion curves and approximate air consumption
value (in this case, 9.8 scfm).

8.2

GPM

curve, draw vertical lines downward until
reaching the bottom scale on the chart. This
identifi es the fl ow X Factor (in this case, 0.58)
and air X Factor (in this case, 0.48).

Step 3:

Calculating performance for specific EMS

setting. Multiply the fl ow rate (8.2 gpm)

obtained in Step 1 by the fl ow X Factor multi­plier (0.58) in Step 2 to determine the fl ow rate
at EMS setting 2. Multiply the air consump­tion (9.8 scfm) obtained in Step 1 by the air
X Factor multiplier (0.48) in Step 2 to deter­mine the air consumption at EMS setting 2
(Figure 3).

8.2

gpm

.58

4.8

gpm

0.58

0.48

(fl ow rate for Setting 4)

(Flow X Factor setting 2)

(Flow rate for setting 2)

EMS CURVE

fl ow multiplier

air multiplier

Step 2:

Determining flow and air X Factors. Locate
your discharge pressure (40 psig) on the verti­cal axis of the EMS curve (Figure 2). Follow
along the 2.8 bar (40 psig) horizontal line until
intersecting both fl ow and air curves for your
desired EMS setting (in this case, setting 2).
Mark the points where the EMS curves inter­sect the horizontal discharge pressure line.
After locating your EMS points on the EMS

PX8 HS Performance 9 WILDEN PUMP & ENGINEERING, LLC

9.8

scfm

(air consumption for setting 4)

.48

4.7

Figure 3

The fl ow rate and air consumption at Setting
2 are found to be 18.2 lpm (4.8 gpm) and 7.9
Nm3/h (4.7 scfm) respectively.

(Air X Factor setting 2)

scfm

(air consumption for setting 2)

HOW TO USE THIS EMS CURVE

Example 2.1

SETTING 4 PERFORMANCE CURVE

Figure 4

Example data point =

This is an example showing how to determine the inlet air
pressure and the EMS setting for your Pro-Flo X™ pump to
optimize the pump for a specifi c application. For this exam­ple we will be using an application requirement of 18.9 lpm
(5 gpm) fl ow rate against 2.8 bar (40 psig) discharge pressure.
This example will illustrate how to calculate the air consump­tion that could be expected at this operational point.

10.2

gpm

DETERMINE EMS SETTING

Step 1

: Establish inlet air pressure. Higher air pres-

sures will typically allow the pump to run
more effi ciently, however, available plant air
pressure can vary greatly. If an operating
pressure of 6.9 bar (100 psig) is chosen when

EMS Flow

Settings 1 & 2

0.49

In our example it is 38.6 lpm (10.2 gpm). This

is the setting 4 fl ow rate. Observe the loca­tion of the performance point relative to air
consumption curves and approximate air
consumption value. In our example setting
4 air consumption is 24 Nm3/h (14 scfm).
See fi gure 4.

Step 3

: Determine flow X Factor. Divide the required

fl ow rate 18.9 lpm (5 gpm) by the setting 4 fl ow
rate 38.6 lpm (10.2 gpm) to determine the fl ow
X Factor for the application.

5

gpm / 10.2 gpm = 0.49 (flow X Factor)

EMS CURVE

Figure 5

fl ow multiplier

plant air frequently dips to 6.2 bar (90 psig)

Step 4

pump performance will vary. Choose an oper­ating pressure that is within your compressed
air system's capabilities. For this example we
will choose 4.1 bar (60 psig).

: Determine EMS setting from the flow

X Factor. Plot the point representing the fl ow

X Factor (0.49) and the application discharge
pressure 2.8 bar (40 psig) on the EMS curve.
This is done by following the horizontal 2.8

Step 2

: Determine performance point at setting 4. For

this example an inlet air pressure of 4.1 bar
(60 psig) inlet air pressure has been chosen.
Locate the curve that represents the perfor­mance of the pump with 4.1 bar (60 psig) inlet
air pressure. Mark the point where this curve
crosses the horizontal line representing 2.8
bar (40 psig) discharge pressure. After locat­ing this point on the fl ow curve, draw a verti­cal line downward until reaching the bottom
scale on the chart and identify the fl ow rate.

bar (40 psig) psig discharge pressure line until
it crosses the vertical 0.49 X Factor line. Typi­cally, this point lies between two fl ow EMS
setting curves (in this case, the point lies be­tween the fl ow curves for EMS setting 1 and

2). Observe the location of the point relative
to the two curves it lies between and approxi­mate the EMS setting (fi gure 5). For more pre­cise results you can mathematically interpo­late between the two curves to determine the
optimal EMS setting.

For this example the EMS setting is 1.8.

WILDEN PUMP & ENGINEERING, LLC 10 PX8 HS Performance

HOW TO USE THIS EMS CURVE

Example 2.2

SETTING 4 PERFORMANCE CURVE

Figure 6

Example data point =

10.2

gpm

Determine air consumption at a specific
EMS setting.

Step 1

: Determine air X Factor. In order to determine

the air X Factor, identify the two air EMS set­ting curves closest to the EMS setting estab­lished in example 2.1 (in this case, the point lies
between the air curves for EMS setting 1 and

2). The point representing your EMS setting
(1.8) must be approximated and plotted on the
EMS curve along the horizontal line represent­ing your discharge pressure (in this case, 40
psig). This air point is different than the fl ow
point plotted in example 2.1. After estimating
(or interpolating) this point on the curve, draw
a vertical line downward until reaching the
bottom scale on the chart and identify the air
X Factor (fi gure 7).

EMS CURVE

EMS Air

Settings 1 & 2

Figure 7

Example data point =

Step 2

: Determine air consumption. Multiply your

setting 4 air consumption (14 scfm) value by
the air X Factor obtained above (0.40) to deter­mine your actual air consumption.

1

4 scfm x 0.40 = 5.6 SCFM

In summary, for an application requiring 18.9 lpm
(5 gpm) against 2.8 bar (40 psig) discharge pressure,
the pump inlet air pressure should be set to 4.1 bar
(60 psig) and the EMS dial should be set to 1.8. The
pump would then consume 9.5 Nm3/h (5.6 scfm) of
compressed air.

0.40

air multiplier

For this example the air X Factor is 0.40

PX8 HS Performance 11 WILDEN PUMP & ENGINEERING, LLC

EMS CURVE

PERFORMANCE

/h

3

EXAMPLE

A PX8 Sanifl o HS, full stroke Rubber-fi tted pump operating at EMS

setting 4, achieved a fl ow rate of 348 lpm (92 gpm) using 119 Nm

(70 scfm) of air when run at 5.5 bar (80 psig) air inlet pressure and 2.1

bar (30 psig) discharge pressure (See dot on performance curve).

The end user did not require that much fl ow and wanted to reduce

air consumption at his facility. He determined that EMS setting 2

would meet his needs. At 2.1 bar (30 psig) discharge pressure and

EMS setting 2, the fl ow “X factor” is 0.74 and the air “X factor” is

0.48 (see dots on EMS curve).

/h (34 scfm). The fl ow rate was reduced by 26% while

3

the air consumption was reduced by 52%, thus providing increased

effi ciency.

For a detailed example for how to set your EMS, see beginning of

performance curve section.

Multiplying the original setting 4 values by the “X factors” provides

the setting 2 fl ow rate of 258 lpm (68 gpm) and an air consumption

of 57 Nm

Caution: Do not exceed 8.6 bar (125 psig) air supply pressure.

The Effi ciency Management System (EMS)

can be used to optimize the performance of

your Wilden pump for specifi c applications.

The pump is delivered with the EMS adjusted

to setting 4, which allows maximum fl ow.

The EMS curve allows the pump user to deter-

mine fl ow and air consumption at each EMS

setting. For any EMS setting and discharge

pressure, the “X factor” is used as a multi-

plier with the original values from the setting

4 performance curve to calculate the actual

fl ow and air consumption values for that spe-

cifi c EMS setting. Note: you can interpolate

between the setting curves for operation at

intermediate EMS settings

1

SETTING 4 PERFORMANCE CURVE

Displacement per stroke was calculated at 4.8 bar (70 psig)

Flow rates indicated on chart were determined by pumping water with a vertically mounted, center ported ball check confi guration.

TECHNICAL DATA

Height . . . . . . . . . . . . . . . . . . . . . . . . . 1008 mm (39.7”)

Width. . . . . . . . . . . . . . . . . . . . . . . . . . . 460 mm (18.1”)

Depth. . . . . . . . . . . . . . . . . . . . . . . . . . . 498 mm (19.6”)

Ship Weight . . . . . . . . . . . . . . . . . . . . . 49 kg (109 lbs.)

Air Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 mm (3/4”)

Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 mm (2”)

Outlet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 mm (2”)

Suction Lift . . . . . . . . . . . . . . . . . . . . . 5.3 m Dry (17.3’)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.0 m Wet (29.5’)

Disp. Per Stroke. . . . . . . . . . . . . . . . . . 1.1 l (0.28 gal.)

Max. Flow Rate . . . . . . . . . . . . . . . .579 lpm (153 gpm)

Max. Size Solids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mushroom Valve . . . . . . . . . . . . . . . . . 6.4 mm (1/4”)

Ball Valve. . . . . . . . . . . . . . . . . . . . . . . 12.7 mm (1/2”)

PX8 SANIFLO HS FULL STROKE RUBBER-FITTED

Flap Valve (compressible solids). 47.5 mm (1-7/8”)

WILDEN PUMP & ENGINEERING, LLC 12 PX8 HS Performance

air inlet pressure against a 2 bar (30 psig) head pressure.

Surface Finish . . . . . . . . . . . . . . . . Ra 0.8 µm (32 µ-in)

1

When alternate check valve options are used, multiply fl ow rate by appropriate factor: Flap check valve = 83%. For optimum life and

performance, pumps should be specifi ed so that daily operation parameters fall in the center of the pump performance curve.

EMS CURVE

PERFORMANCE

/h (60

3

scfm) of air when run at 4.1 bar (60 psig) air inlet pressure and 1.4

bar (20 psig) discharge pressure (See dot on performance curve).

The end user did not require that much fl ow and wanted to reduce

air consumption at his facility. He determined that EMS setting 2

would meet his needs. At 1.4 bar (20 psig) discharge pressure and

EXAMPLE

A PX8 Sanifl o HS, full stroke TPE-fi tted pump operating at EMS set-

ting 4, achieved a fl ow rate of 367 lpm (97 gpm) using 102 Nm

EMS setting 2, the fl ow “X factor” is 0.66 and the air “X factor” is

/h (28 scfm). The fl ow rate was reduced by 34% while

3

0.47 (see dots on EMS curve).

Multiplying the original setting 4 values by the “X factors” provides

the setting 2 fl ow rate of 242 lpm (64 gpm) and an air consumption

of 48 Nm

the air consumption was reduced by 53%, thus providing increased

effi ciency.

For a detailed example for how to set your EMS, see beginning of

performance curve section.

Caution: Do not exceed 8.6 bar (125 psig) air supply pressure.

The Effi ciency Management System (EMS)

can be used to optimize the performance of

your Wilden pump for specifi c applications.

The pump is delivered with the EMS adjusted

to setting 4, which allows maximum fl ow.

The EMS curve allows the pump user to deter-

mine fl ow and air consumption at each EMS

setting. For any EMS setting and discharge

pressure, the “X factor” is used as a multi-

plier with the original values from the setting

4 performance curve to calculate the actual

fl ow and air consumption values for that spe-

cifi c EMS setting. Note: you can interpolate

between the setting curves for operation at

intermediate EMS settings.

1

SETTING 4 PERFORMANCE CURVE

Displacement per stroke was calculated at 4.8 bar (70 psig)

Flow rates indicated on chart were determined by pumping water with a vertically mounted, center ported ball check confi guration.

TECHNICAL DATA

Height . . . . . . . . . . . . . . . . . . . . . . . . .1008 mm (39.7”)

Width. . . . . . . . . . . . . . . . . . . . . . . . . . .460 mm (18.1”)

Depth. . . . . . . . . . . . . . . . . . . . . . . . . . .498 mm (19.6”)

Ship Weight . . . . . . . . . . . . . . . . . . . . .49 kg (109 lbs.)

Air Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . 19 mm (3/4”)

Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 mm (2”)

Outlet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 mm (2”)

Suction Lift . . . . . . . . . . . . . . . . . . . . . .1.9 m Dry (6.2’)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.0 m Wet (29.5’)

Disp. Per Stroke. . . . . . . . . . . . . . . . . 1.2 l (0.33 gal.)

Max. Flow Rate . . . . . . . . . . . . . . .587 lpm (155 gpm)

Max. Size Solids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mushroom Valve . . . . . . . . . . . . . . . . 6.4 mm (1/4”)

Ball Valve. . . . . . . . . . . . . . . . . . . . . . 12.7 mm (1/2”)

PX8 SANIFLO HS FULL STROKE TPE-FITTED

Flap Valve (compressible solids) 47.5 mm (1-7/8”)

PX8 HS Performance 13 WILDEN PUMP & ENGINEERING, LLC

air inlet pressure against a 2 bar (30 psig) head pressure.

Surface Finish . . . . . . . . . . . . . . . Ra 0.8 µm (32 µ-in)

1

When alternate check valve options are used, multiply fl ow rate by appropriate factor: Flap check valve = 83%. For optimum life and

performance, pumps should be specifi ed so that daily operation parameters fall in the center of the pump performance curve.

EMS CURVE

PERFORMANCE

/h

3

EXAMPLE

A PX8 Sanifl o HS, Full Stroke PTFE -fi tted pump operating at EMS

setting 4, achieved a fl ow rate of 201 lpm (53 gpm) using 93 Nm

(55 scfm) of air when run at 5.5 bar (80 psig) air inlet pressure and 4.1

bar (60 psig) discharge pressure (See dot on performance curve).

The end user did not require that much fl ow and wanted to reduce

air consumption at his facility. He determined that EMS setting 2

would meet his needs. At 4.1 bar (60 psig) discharge pressure and

EMS setting 2, the fl ow “X factor” is 0.70 and the air “X factor” is

0.60 (see dots on EMS curve).

/h (33 scfm). The fl ow rate was reduced by 30% while

3

the air consumption was reduced by 40%, thus providing increased

effi ciency.

For a detailed example for how to set your EMS, see beginning of

performance curve section.

Multiplying the original setting 4 values by the “X factors” provides

the setting 2 fl ow rate of 140 lpm (37 gpm) and an air consumption

of 56 Nm

Caution: Do not exceed 8.6 bar (125 psig) air supply pressure.

The Effi ciency Management System (EMS)

can be used to optimize the performance of

your Wilden pump for specifi c applications.

The pump is delivered with the EMS adjusted

to setting 4, which allows maximum fl ow.

The EMS curve allows the pump user to

determine fl ow and air consumption at

each EMS setting. For any EMS setting and

discharge pressure, the “X factor” is used

as a multiplier with the original values from

the setting 4 performance curve to calculate

the actual fl ow and air consumption values

for that specifi c EMS setting. Note: you can

interpolate between the setting curves for

operation at intermediate EMS settings.

1

SETTING 4 PERFORMANCE CURVE

Displacement per stroke was calculated at 4.8 bar (70 psig)

Flow rates indicated on chart were determined by pumping water with a vertically mounted, center ported ball check confi guration.

When alternate check valve options are used, multiply fl ow rate by appropriate factor: For optimum life and performance, pumps

TECHNICAL DATA

Height . . . . . . . . . . . . . . . . . . . . . . . . . 1008 mm (39.7”)

Width. . . . . . . . . . . . . . . . . . . . . . . . . . . 460 mm (18.1”)

Depth. . . . . . . . . . . . . . . . . . . . . . . . . . . 398 mm (15.7”)

Ship Weight . . . . . . . . . . . . . . . . . . . . . 49 kg (109 lbs.)

Air Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 mm (3/4”)

Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 mm (2”)

Outlet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 mm (2”)

Suction Lift . . . . . . . . . . . . . . . . . . . . . 4.8 m Dry (15.9’)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.6 m Wet (28.4’)

Disp. Per Stroke. . . . . . . . . . . . . . . . . . 1.1 l (0.28 gal.)

Max. Flow Rate . . . . . . . . . . . . . . . .556 lpm (147 gpm)

Max. Size Solids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mushroom Valve . . . . . . . . . . . . . . . . . 6.4 mm (1/4”)

PX8 SANIFLO HS FULL STROKE PTFE-FITTED

Ball Valve. . . . . . . . . . . . . . . . . . . . . . . 12.7 mm (1/2”)

WILDEN PUMP & ENGINEERING, LLC 14 PX8 HS Performance

air inlet pressure against a 2 bar (30 psig) head pressure.

Surface Finish . . . . . . . . . . . . . . . . Ra 0.8 µm (32 µ-in)

1

should be specifi ed so that daily operation parameters fall in the center of the pump performance curve.

PERFORMANCE

EMS CURVE

(Full Stroke Integral Piston Diaphragm)

/h

3

EXAMPLE

A PX8 Sanifl o HS, Full Stroke SIPD -fi tted pump operating at EMS

setting 4, achieved a fl ow rate of 390 lpm (103 gpm) using 105 Nm

(62 scfm) of air when run at 4.1 bar (60 psig) air inlet pressure and 1.4

bar (20 psig) discharge pressure (See dot on performance curve).

The end user did not require that much fl ow and wanted to reduce

air consumption at his facility. He determined that EMS setting 2

would meet his needs. At 1.4 bar (20 psig) discharge pressure and

EMS setting 2, the fl ow “X factor” is 0.79 and the air “X factor” is

0.54 (see dots on EMS curve).

/h (33 scfm). The fl ow rate was reduced by 21% while

3

the air consumption was reduced by 46%, thus providing increased

effi ciency.

For a detailed example for how to set your EMS, see beginning of

performance curve section.

Multiplying the original setting 4 values by the “X factors” provides

the setting 2 fl ow rate of 308 lpm (81 gpm) and an air consumption

of 57 Nm

Caution: Do not exceed 8.6 bar (125 psig) air supply pressure.

The Effi ciency Management System (EMS)

can be used to optimize the performance of

your Wilden pump for specifi c applications.

The pump is delivered with the EMS adjusted

to setting 4, which allows maximum fl ow.

The EMS curve allows the pump user to

determine fl ow and air consumption at

each EMS setting. For any EMS setting and

discharge pressure, the “X factor” is used

as a multiplier with the original values from

the setting 4 performance curve to calculate

the actual fl ow and air consumption values

for that specifi c EMS setting. Note: you can

interpolate between the setting curves for

operation at intermediate EMS settings.

1

SETTING 4 PERFORMANCE CURVE

PX8 SANIFLO HS FULL STROKE SIPD-FITTED

TECHNICAL DATA

Height . . . . . . . . . . . . . . . . . . . . . . . . . 1008 mm (39.7”)

Width. . . . . . . . . . . . . . . . . . . . . . . . . . . 460 mm (18.1”)

Depth. . . . . . . . . . . . . . . . . . . . . . . . . . . 398 mm (15.7”)

Ship Weight . . . . . . . . . . . . . . . . . . . . . 49 kg (109 lbs.)

Air Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 mm (3/4”)

Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 mm (2”)

Outlet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 mm (2”)

Suction Lift . . . . . . . . . . . . . . . . . . . . . 4.7 m Dry (15.3’)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.6 m Wet (28.4’)

Disp. Per Stroke. . . . . . . . . . . . . . . . . . 1.1 l (0.28 gal.)

Max. Flow Rate . . . . . . . . . . . . . . . .556 lpm (147 gpm)

Max. Size Solids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mushroom Valve . . . . . . . . . . . . . . . . . 6.4 mm (1/4”)

PX8 HS Performance 15 WILDEN PUMP & ENGINEERING, LLC

Displacement per stroke was calculated at 4.8 bar (70 psig)

Flow rates indicated on chart were determined by pumping water with a vertically mounted, center ported ball check confi guration.

Ball Valve. . . . . . . . . . . . . . . . . . . . . . . 12.7 mm (1/2”)

air inlet pressure against a 2 bar (30 psig) head pressure.

Surface Finish . . . . . . . . . . . . . . . . Ra 0.8 µm (32 µ-in)

1

When alternate check valve options are used, multiply fl ow rate by appropriate factor: For optimum life and performance, pumps

should be specifi ed so that daily operation parameters fall in the center of the pump performance curve.

EMS CURVE

PERFORMANCE

SETTING 4 PERFORMANCE CURVE

/h (100 scfm) of air when run at 6.9 bar (100 psig) air inlet pres-

3

sure and 1.4 bar (20 psig) discharge pressure (See dot on perfor-

mance curve).

The end user did not require that much fl ow and wanted to reduce

air consumption at his facility. He determined that EMS setting 1

would meet his needs. At 1.4 bar (20 psig) discharge pressure and

EMS setting 1, the fl ow “X factor” is 0.33 and the air “X factor” is

EXAMPLE

A PX8 Sanifl o HS, reduced stroke PTFE-fi tted pump operating at

EMS setting 4, achieved a fl ow rate of 257 lpm (68 gpm) using 170

Nm

The Effi ciency Management System (EMS)

can be used to optimize the performance of

your Wilden pump for specifi c applications.

The pump is delivered with the EMS adjusted

to setting 4, which allows maximum fl ow.

The EMS curve allows the pump user to deter-

mine fl ow and air consumption at each EMS

0.21 (see dots on EMS curve).

setting. For any EMS setting and discharge

pressure, the “X factor” is used as a multi-

plier with the original values from the setting

4 performance curve to calculate the actual

fl ow and air consumption values for that spe-

1

/h (21 scfm). The fl ow rate was reduced by 67% while the air con-

3

Multiplying the original setting 4 values by the “X factors” provides

sumption was reduced by 79%, thus providing increased effi ciency.

the setting 1 fl ow rate of 85 lpm (22 gpm) and an air consumption of 36

Nm

For a detailed example for how to set your EMS, see beginning of

performance curve section.

Caution: Do not exceed 8.6 bar (125 psig) air supply pressure.

cifi c EMS setting. Note: you can interpolate

between the setting curves for operation at

intermediate EMS settings.

PX8 SANIFLO HS REDUCED STROKE PTFE-FITTED

TECHNICAL DATA

Height . . . . . . . . . . . . . . . . . . . . . . . . .1008 mm (39.7”)

Width. . . . . . . . . . . . . . . . . . . . . . . . . . .460 mm (18.1”)

Depth. . . . . . . . . . . . . . . . . . . . . . . . . . .498 mm (19.6”)

Ship Weight . . . . . . . . . . . . . . . . . . . . .49 kg (109 lbs.)

Air Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . 19 mm (3/4”)

Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 mm (2”)

Outlet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 mm (2”)

Suction Lift . . . . . . . . . . . . . . . . . . . . . .2.8 m Dry (9.1’)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.0 m Wet (29.5’)

Disp. Per Stroke. . . . . . . . . . . . . . . . . 0.5 l (0.13 gal.)

Max. Flow Rate . . . . . . . . . . . . . . . .353 lpm (96 gpm)

Max. Size Solids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mushroom Valve . . . . . . . . . . . . . . . . 6.4 mm (1/4”)

Displacement per stroke was calculated at 4.8 bar (70 psig)

Ball Valve. . . . . . . . . . . . . . . . . . . . . . 12.7 mm (1/2”)

air inlet pressure against a 2 bar (30 psig) head pressure.

Surface Finish . . . . . . . . . . . . . . . Ra 0.8 µm (32 µ-in)

1

Flow rates indicated on chart were determined by pumping water with a vertically mounted, center ported ball check confi guration.

WILDEN PUMP & ENGINEERING, LLC 16 PX8 HS Performance

When alternate check valve options are used, multiply fl ow rate by appropriate factor: For optimum life and performance, pumps

should be specifi ed so that daily operation parameters fall in the center of the pump performance curve.

PERFORMANCE

EMS CURVE

(Sanitary Integrate Piston Diaphragm)

EXAMPLE

A PX8 Sanifl o HS, reduced stroke PTFE SIPD-fi tted pump operating

at EMS setting 4, achieved a fl ow rate of 197 lpm (52 gpm) using 93

Nm3/h (55 scfm) of air when run at 4.1 bar (60 psig) air inlet pressure

and 1.4 bar (20 psig) discharge pressure (See dot on performance

curve).

The end user did not require that much fl ow and wanted to reduce

air consumption at his facility. He determined that EMS setting 3

would meet his needs. At 1.4 bar (20 psig) discharge pressure and

EMS setting 3, the fl ow “X factor” is 0.87 and the air “X factor” is

0.74 (see dots on EMS curve).

Multiplying the original setting 4 values by the “X factors” provides the

setting 3 fl ow rate of 171 lpm (45 gpm) and an air consumption of 69

Nm3/h (41 scfm). The fl ow rate was reduced by 13% while the air con-

sumption was reduced by 26%, thus providing increased effi ciency.

For a detailed example for how to set your EMS, see beginning of

performance curve section.

Caution: Do not exceed 8.6 bar (125 psig) air supply pressure.

The Effi ciency Management System (EMS)

can be used to optimize the performance of

your Wilden pump for specifi c applications.

The pump is delivered with the EMS adjusted

to setting 4, which allows maximum fl ow.

The EMS curve allows the pump user to

determine fl ow and air consumption at

each EMS setting. For any EMS setting and

discharge pressure, the “X factor” is used

as a multiplier with the original values from

the setting 4 performance curve to calculate

the actual fl ow and air consumption values

for that specifi c EMS setting. Note: you can

interpolate between the setting curves for

operation at intermediate EMS settings.

1

SETTING 4 PERFORMANCE CURVE

PX8 SANIFLO HS REDUCED STROKE PTFE SIPD-FITTED

PX8 HS Performance 17 WILDEN PUMP & ENGINEERING, LLC

TECHNICAL DATA

Height . . . . . . . . . . . . . . . . . . . . . . . . . 1008 mm (39.7”)

Width. . . . . . . . . . . . . . . . . . . . . . . . . . . 460 mm (18.1”)

Depth. . . . . . . . . . . . . . . . . . . . . . . . . . . 498 mm (19.6”)

Ship Weight . . . . . . . . . . . . . . . . . . . . . 49 kg (109 lbs.)

Air Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 mm (3/4”)

Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 mm (2”)

Outlet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 mm (2”)

Suction Lift . . . . . . . . . . . . . . . . . . . . . . 2.3 m Dry (7.4’)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.0 m Wet (29.5’)

Disp. Per Stroke. . . . . . . . . . . . . . . . . . 0.4 l (0.11 gal.)

Max. Flow Rate . . . . . . . . . . . . . . . .405 lpm (107 gpm)

Max. Size Solids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mushroom Valve . . . . . . . . . . . . . . . . . 6.4 mm (1/4”)

Displacement per stroke was calculated at 4.8 bar (70 psig)

Flow rates indicated on chart were determined by pumping water with a vertically mounted, center ported ball check confi guration.

Ball Valve. . . . . . . . . . . . . . . . . . . . . . . 12.7 mm (1/2”)

air inlet pressure against a 2 bar (30 psig) head pressure.

Surface Finish . . . . . . . . . . . . . . . . Ra 0.8 µm (32 µ-in)

1

When alternate check valve options are used, multiply fl ow rate by appropriate factor: For optimum life and performance, pumps

should be specifi ed so that daily operation parameters fall in the center of the pump performance curve.

EMS CURVE

-FITTED

TM

PERFORMANCE

EXAMPLE

A PX8 Sanifl o HS, reduced stroke Ultra-Flex-fi tted pump operating at

EMS setting 4, achieved a fl ow rate of 250 lpm (66 gpm) using 97 Nm3/h

(57 scfm) of air when run at 4.1 bar (60 psig) air inlet pressure and 2.1

bar (30 psig) discharge pressure (See dot on performance curve).

The end user did not require that much fl ow and wanted to reduce

air consumption at his facility. He determined that EMS setting 1

would meet his needs. At 2.1 bar (30 psig) discharge pressure and

EMS setting 1, the fl ow “X factor” is 0.34 and the air “X factor” is

0.20 (see dots on EMS curve).

Multiplying the original setting 4 values by the “X factors” provides

the setting 1 fl ow rate of 85 lpm (22 gpm) and an air consumption

of 19 Nm3/h (11 scfm). The fl ow rate was reduced by 66% while

the air consumption was reduced by 80%, thus providing increased

effi ciency.

For a detailed example for how to set your EMS, see beginning of

performance curve section.

Caution: Do not exceed 8.6 bar (125 psig) air supply pressure.

The Effi ciency Management System (EMS)

can be used to optimize the performance of

your Wilden pump for specifi c applications.

The pump is delivered with the EMS adjusted

to setting 4, which allows maximum fl ow.

The EMS curve allows the pump user to

determine fl ow and air consumption at

each EMS setting. For any EMS setting and

discharge pressure, the “X factor” is used

as a multiplier with the original values from

the setting 4 performance curve to calculate

the actual fl ow and air consumption values

for that specifi c EMS setting. Note: you can

interpolate between the setting curves for

operation at intermediate EMS settings.

1

SETTING 4 PERFORMANCE CURVE

Displacement per stroke was calculated at 4.8 bar (70 psig)

Flow rates indicated on chart were determined by pumping water with a vertically mounted, center ported ball check confi guration.

When alternate check valve options are used, multiply fl ow rate by appropriate factor: For optimum life and performance, pumps

TECHNICAL DATA

Height . . . . . . . . . . . . . . . . . . . . . . . . . 1008 mm (39.7”)

Width. . . . . . . . . . . . . . . . . . . . . . . . . . . 460 mm (18.1”)

Depth. . . . . . . . . . . . . . . . . . . . . . . . . . . 498 mm (19.6”)

Ship Weight . . . . . . . . . . . . . . . . . . . . . 49 kg (109 lbs.)

Air Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 mm (3/4”)

Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 mm (2”)

Outlet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 mm (2”)

Suction Lift . . . . . . . . . . . . . . . . . . . . . 3.8 m Dry (12.5’)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.0 m Wet (29.5’)

Disp. Per Stroke. . . . . . . . . . . . . . . . . . 0.9 l (0.23 gal.)

Max. Flow Rate . . . . . . . . . . . . . . . .534 lpm (141 gpm)

Max. Size Solids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mushroom Valve . . . . . . . . . . . . . . . . . 6.4 mm (1/4”)

PX8 SANIFLO HS REDUCED STROKE ULTRA-FLEX

WILDEN PUMP & ENGINEERING, LLC 18 PX8 HS Performance

Ball Valve. . . . . . . . . . . . . . . . . . . . . . . 12.7 mm (1/2”)

air inlet pressure against a 2 bar (30 psig) head pressure.

Surface Finish . . . . . . . . . . . . . . . . Ra 0.8 µm (32 µ-in)

1

should be specifi ed so that daily operation parameters fall in the center of the pump performance curve.

Section 5B

SUCTION LIFT CURVES

PX8 SANIFLO™ HS
REDUCED STROKE
SUCTION LIFT CAPABILITY

PX8 SANIFLO™ HS FULL
STROKE SUCTION LIFT
CAPABILITY

Suction lift curves are calibrated for pumps operating
at 305 m (1,000') above sea level. This chart is meant
to be a guide only. There are many variables which
can affect your pump’s operating characteristics. The

number of intake and discharge elbows, viscosity of
pumping fl uid, elevation (atmospheric pressure) and
pipe friction loss all affect the amount of suction lift
your pump will attain.

PX8 HS Performance 19 WILDEN PUMP & ENGINEERING, LLC

NOTES

Section 6

SUGGESTED INSTALLATION

Wilden pumps are designed to meet the performance
requirements of even the most demanding pumping
applications. They have been designed and manufactured
to the highest standards and are available in a variety of
liquid path materials to meet your chemical resistance
needs. Refer to the performance section of this manual for
an in-depth analysis of the performance characteristics of
your pump. Wilden offers the widest variety of elastomer
options in the industry to satisfy temperature, chemical
compatibility, abrasion resistance and fl ex concerns.

The suction pipe size should be equivalent or larger than
the diameter of the suction inlet on your Wilden pump.
The suction hose must be non-collapsible, reinforced type
as these pumps are capable of pulling a high vacuum.
Discharge piping should also be equivalent or larger than the
diameter of the pump discharge to minimize friction losses.
It is critical that all fi ttings and connections are airtight or a
reduction or loss of pump suction capability will result.

INSTALLATION: Months of careful planning, study,
and selection efforts can result in unsatisfactory pump
performance if installation details are left to chance.

Premature failure and long term dissatisfaction can be
avoided if reasonable care is exercised throughout the
installation process.

LOCATION: Noise, safety, and other logistical factors usually
dictate where equipment will be situated on the production
fl oor. Multiple installations with confl icting requirements
can result in congestion of utility areas, leaving few choices
for additional pumps.

Within the framework of these and other existing conditions,
every pump should be located in such a way that six key
factors are balanced against each other to maximum
advantage.

ACCESS: First of all, the location should be accessible. If
it’s easy to reach the pump, maintenance personnel will
have an easier time carrying out routine inspections and
adjustments. Should major repairs become necessary, ease
of access can play a key role in speeding the repair process
and reducing total downtime.

AIR SUPPLY: Every pump location should have an air
line large enough to supply the volume of air necessary
to achieve the desired pumping rate. Do not exceed the
maximum rated air pressure.

For best results, the pumps should use a 5µ (micron) air
fi lter, needle valve and regulator. The use of an air fi lter
before the pump will ensure that the majority of any pipeline
contaminants will be eliminated.

SOLENOID OPERATION: When operation is controlled by a
solenoid valve in the air line, three-way valves should be
used. This valve allows trapped air between the valve and
the pump to bleed off which improves pump performance.

MUFFLER: Sound levels are reduced below OSHA
specifi cations using the standard Wilden muffl er. Other
muffl ers can be used to further reduce sound levels, but
they usually reduce pump performance.

ELEVATION: Selecting a site that is well within the pump’s
dynamic lift capability will assure that loss-of-prime issues will
be eliminated. In addition, pump effi ciency can be adversely
affected if proper attention is not given to site location.

PIPING: Final determination of the pump site should not be
made until the piping challenges of each possible location
have been evaluated. The impact of current and future
installations should be considered ahead of time to make
sure that inadvertent restrictions are not created for any
remaining sites.

The best choice possible will be a site involving the shortest
and straightest hook-up of suction and discharge piping.
Unnecessary elbows, bends, and fi ttings should be avoided.
Pipe sizes should be selected to keep friction losses within
practical limits. All piping should be supported independently
of the pump. In addition, the piping should be aligned to
avoid placing stress on the pump fi ttings.

Flexible hose can be installed to aid in absorbing the forces
created by the natural reciprocating action of the pump. If the
pump is to be bolted down to a solid location, a mounting
pad placed between the pump and the foundation will assist
in minimizing pump vibration. Flexible connections between
the pump and rigid piping will also assist in minimizing
pump vibration. If quick-closing valves are installed at any
point in the discharge system, or if pulsation within a system
becomes a problem, a surge suppressor (SD Equalizer
should be installed to protect the pump, piping and gauges
from surges and water hammer.

If the pump is to be used in a self-priming application, make
sure that all connections are airtight and that the suction lift is
within the model’s ability. NOTE: Materials of construction and
elastomer material have an effect on suction lift parameters.
Please refer to the performance section for specifi cs.

When pumps are installed in applications involving fl ooded
suction or suction head pressures, a gate valve should be
installed in the suction line to permit closing of the line for
pump service.

Pumps in service with a positive suction head are most effi cient
when inlet pressure is limited to 0.5–0.7 bar (7–10 psig).
Premature diaphragm failure may occur if positive suction
is 0.7 bar (10 psig) and higher.

SUBMERSIBLE APPLICATIONS: Pro-Flo X™ pumps can be
used for submersible applications, when using the Pro-Flo
X™ submersible option.

ALL WILDEN PUMPS ARE CAPABLE OF PASSING SOLIDS.
A STRAINER SHOULD BE USED ON THE PUMP INTAKE TO
ENSURE THAT THE PUMP´S RATED SOLIDS CAPACITY IS
NOT EXCEEDED.

®

)

WIL-12310-E-04 21 WILDEN PUMP & ENGINEERING, LLC

SUGGESTED INSTALLATION

NOTE: In the event of a power failure, the air shut off valve should
be closed, if restarting of the pump is not desirable once power
is regained.

AIR OPERATED PUMPS: To stop the pump from operating in an
emergency situation, simply close the air shut off valve (user
supplied) installed in the air supply line. A properly functioning

valve will stop the air supply to the pump, therefore stopping
output. This air shut off valve should be located far enough away
from the pumping equipment such that it can be reached safely in
an emergency situation.

WILDEN PUMP & ENGINEERING, LLC 22 WIL-12310-E-04

SUGGESTED OPERATION & MAINTENANCE

OPERATION: The Pro-Flo

®

and Pro-Flo X™ pumps are

pre-lubricated, and do not require in-line lubrication.
Additional lubrication will not damage the pump,
however if the pump is heavily lubricated by an
external source, the pump’s internal lubrication may
be washed away. If the pump is then moved to a non­lubricated location, it may need to be disassembled
and re-lubricated as described in the ASSEMBLY/
DISASSEMBLY INSTRUCTIONS.

Pump discharge rate can be controlled by limiting the
volume and/or pressure of the air supply to the pump.
An air regulator is used to regulate air pressure. A needle
valve is used to regulate volume. Pump discharge rate
can also be controlled by throttling the pump discharge
by partially closing a valve in the discharge line of the
pump. This action increases friction loss which reduces
fl ow rate. (See Section 5.) This is useful when the need
exists to control the pump from a remote location.
When the pump discharge pressure equals or exceeds
the air supply pressure, the pump will stop; no bypass
or pressure relief valve is needed, and pump damage
will not occur. The pump has reached a “deadhead”
situation and can be restarted by reducing the fl uid

discharge pressure or increasing the air inlet pressure.
The Wilden Pro-Flo

®

and Pro-Flo X™ pumps run solely

on compressed air and do not generate heat, therefore
your process fl uid temperature will not be affected.

MAINTENANCE AND INSPECTIONS: Since each
application is unique, maintenance schedules may
be different for every pump. Frequency of use, line
pressure, viscosity and abrasiveness of process fl uid
all affect the parts life of a Wilden pump. Periodic
inspections have been found to offer the best
means for preventing unscheduled pump downtime.
Personnel familiar with the pump’s construction and
service should be informed of any abnormalities that
are detected during operation.

RECORDS: When service is required, a record should
be made of all necessary repairs and replacements.
Over a period of time, such records can become a
valuable tool for predicting and preventing future
maintenance problems and unscheduled downtime. In
addition, accurate records make it possible to identify
pumps that are poorly suited to their applications.

TROUBLESHOOTING

Pump will not run or runs slowly.

1. Ensure that the air inlet pressure is at least 0.4 bar
(5 psig) above startup pressure and that the differential
pressure (the difference between air inlet and liquid
discharge pressures) is not less than 0.7 bar (10 psig).

2. Check air inlet fi lter for debris (see recommended
installation).

3. Check for extreme air leakage (blow by) which
would indicate worn seals/bores in the air valve,
pilot spool, main shaft.

4. Disassemble pump and check for obstructions
in the air passageways or objects which would
obstruct the movement of internal parts.

5. Check mating surfaces of fl ap valve assembly.

6. Check for sticking ball check valves. If material being
pumped is not compatible with pump elastomers,
swelling may occur. Replace ball check valves and
seats with proper elastomers. Also, as the check
valve balls wear out, they become smaller and can
become stuck in the seats. In this case, replace balls
and seats.

7. Check for broken inner piston which will cause the
air valve spool to be unable to shift.

8. Remove plug from pilot spool exhaust.

2. Verify that vacuum required to lift liquid is not
greater than the vapor pressure of the material
being pumped (cavitation).

3. Check for sticking ball check valves. If material being
pumped is not compatible with pump elastomers,
swelling may occur. Replace ball check valves and
seats with proper elastomers. Also, as the check
valve balls wear out, they become smaller and can
become stuck in the seats. In this case, replace balls
and seats.

Pump air valve freezes.

1. Check for excessive moisture in compressed
air. Either install a dryer or hot air generator for
compressed air. Alternatively, a coalescing fi lter
may be used to remove the water from the
compressed air in some applications.

Air bubbles in pump discharge.

1. Check for ruptured diaphragm.

2. Check tightness of outer pistons (refer to Section 7).

3. Check tightness of fasteners and integrity of o-rings
and seals, especially at intake manifold.

4. Ensure pipe connections are airtight.

Pump runs but little or no product fl ows.

1. Check for pump cavitation; slow pump speed down to
allow thick material to fl ow into liquid chambers.

WIL-12310-E-04 23 WILDEN PUMP & ENGINEERING, LLC

Product comes out air exhaust.

1. Check for diaphragm rupture.

2. Check tightness of outer pistons to shaft.

Section 7 Assembly / Disassembly

Section 7

PUMP DISASSEMBLY

Tools Required :

• Adjustable Wrench

• Vise equipped with
soft jaws (such as
plywood, plastic
or other suitable
material)

CAUTION: Before any maintenance or repair is attempted, the compressed air line
to the pump should be disconnected and all air pressure allowed to bleed from the
pump. Disconnect all intake, discharge, and air lines. Drain the pump by turning it
upside down and allowing any fl uid to fl ow into a suitable container. Be aware of
any hazardous effects of contact with your process fl uid.

NOTE: The model photographed for these instructions incorporates PTFE
diaphragms.

Step 1

Prior to assembly, alignment marks
should be placed on the liquid
chambers and air chambers to
assist with proper alignment during
reassembly.

WILDEN PUMP & ENGINEERING, LLC 24 WIL-12310-E-04

Step 2

Loosen the wing nut and remove
both discharge manifold clamp
bands.

Step 3

Remove the discharge manifold and
manifold gaskets.

PUMP DISASSEMBLY

Step 4

Next, remove the clamp bands that
secure the ball valve housing to the
liquid chamber.

Step 5A

Next, remove the ball valve housing,
valve ball and gasket.

Step 5B

If your pump is fi tted with a
mushroom valve, remove the
mushroom valve housing,
mushroom valve and gasket.

Step 6

Loosen the wing nut and remove
the inlet manifold clamp bands.

WIL-12310-E-04 25 WILDEN PUMP & ENGINEERING, LLC

Step 7

Next, remove the clamp bands that
secure the ball valve housing to the
liquid chamber.

Step 8

Next, remove the ball valve
housing, valve ball and gasket from
liquid chamber. To ensure proper
alignment during reassembly of
manifold/liquid chamber interface,
turn off-set portion of valve
housing to the left or to the right.
This procedure works for the inlet
manifold and discharge manifold
connections.

PUMP DISASSEMBLY

Step 9

Now the large clamp bands can be
removed. NOTE: Prior to assembly,
alignment marks should be placed
on the liquid chambers and air
chambers to assist with proper
alignment during reassembly.

Step 10A

Next, remove the liquid chamber
from the center section assembly.

Step 10B

If your pump is fi tted with an integral
piston diaphragm (IPD), when you
remove the liquid chamber you will
notice that there is no outer piston.

Step 11A

Using two adjustable wrenches,
turning in the opposite direction,
loosen and remove one of the two
outer pistons.

WILDEN PUMP & ENGINEERING, LLC 26 WIL-12310-E-04

Step 11B

If your pump is fi tted with an IPD,
the procedure for removing the
diaphragm is slightly different.
In this case, simply grasp the
diaphragm in two locations and turn
in a counter-clockwise direction.

Step 12A

After loosening and removing
the outer piston, the remaining
diaphragm assembly and shaft can
be removed from the center section
assembly.

PUMP DISASSEMBLY

Step 12B

If your pump is fi tted with an IPD,
the procedure for removing the
diaphragm is the same.

WIL-GARD™ DIAPHRAGM SENSOR

Wil-Gard™ Diaphragm Sensor Removal

Step 1

After removing the inlet and
discharge manifold assemblies,
disconnect the Wil-Gard™ module
from the sensor wires.

Step 2

Next, remove the large clamp bands
and the liquid chamber on either
side of the pump.

Step 3

The Wil-Gard™ sensor cables can be
easily removed from the diaphragm
assembly by simply pulling them
from between the primary and back­up diaphragm.

WIL-12310-E-04 27 WILDEN PUMP & ENGINEERING, LLC

WIL-GARD™ DIAPHRAGM SENSOR

Wil-Gard™ Diaphragm Sensor Installation

Step 1

The Wil-Gard™ sensor wires must
be installed between the primary
diaphragm and the back-up
diaphragm, on both sides of the
pump, at the 6 o’clock position. They
should be positioned approximately
half the distance to the shaft from
the edge of the diaphragm.

Step 2

Prior to installing the liquid chamber,
and after positioning the Wil-Gard™
sensor cable between the primary
and back-up diaphragms, run the
sensor cable along the diaphragm
bead but outside the pump. Now
install the liquid chamber and large
clamp band.

Step 3

When installing the liquid chamber
and large clamp band, route the Wil­Gard™ sensor cable to the inside of
the large clamp band fastener. Next,
reconnect the Wil-Gard™ module.
NOTE: Use caution to ensure that
the sensor wires are not damaged
or pinched by the clamp band.

WILDEN PUMP & ENGINEERING, LLC 28 WIL-12310-E-04

AIR VALVE / CENTER SECTION DISASSEMBLY

Tools Required :

Tools Required:

• 3/16" Hex Head Wrench

• 1/4" Hex Head Wrench

• Snap Ring Pliers

• O-Ring Pick

CAUTION: Before any maintenance or repair is attempted, the compressed air line
to the pump should be disconnected and all air pressure allowed to bleed from the
pump. Disconnect all intake, discharge, and air lines. Drain the pump by turning it
upside down and allowing any fl uid to fl ow into a suitable container. Be aware of
hazardous effects of contact with your process fl uid.

Step 1

Using a 9/16” wrench, loosen the
bolts that connect the center section
to the stand. CAUTION: With bolts
removed, the center section is no
longer attached to the stand and
must be supported so that it does
not fall from the stand.

WIL-12310-E-04 29 WILDEN PUMP & ENGINEERING, LLC

Step 2

Remove the center section from the
stand.

Step 3

Using a 3/16” hex wrench, loosen
air valve bolts.

AIR VALVE / CENTER SECTION DISASSEMBLY

Air Valve Gasket

Muffl er Gasket

Step 4

Remove muffl er plate and air valve
bolts from air valve assembly
exposing muffl er gasket for
inspection. Replace if necessary.

Step 5

Lift away air valve assembly
and remove air valve gasket for
inspection. Replace if necessary.

Step 6

Remove air valve end cap to expose
air valve spool by simply lifting up
on end cap once air valve bolts are
removed. NOTE: Pro-Flo V™ air
valve incorporates an end cap at
both ends of the air valve.

Step 7

Remove the air valve spool from the
air valve body by threading one air
valve bolt into the end of the air valve
spool and gently sliding the spool
out of the air valve body. Inspect
seals for signs of wear and replace
entire assembly if necessary. Use
caution when handling air valve
spool to prevent damaging seals.
NOTE: seals should not be removed
from assembly. Seals are not sold
separately.

WILDEN PUMP & ENGINEERING, LLC 30 WIL-12310-E-04

Step 8

Remove pilot sleeve retaining snap
ring on both sides of center section
with snap ring pliers.

Step 9

Remove pilot spool sleeve from
center section.

AIR VALVE / CENTER SECTION DISASSEMBLY

Notched EndNotched End

Step 10

Using an o-ring pick, gently remove the o-ring from the opposite
side of the “notched end” on one side of the pilot spool. Gently
remove the pilot spool from pilot spool sleeve and inspect for nicks,
gouges and wear. Replace pilot sleeve or outer sleeve o-rings if
necessary. During re-assembly, never insert the pilot spool into the
sleeve with the “notched end” fi rst, this end incorporates the urethane
o-ring and will be damaged as it slides over the ports cut in the sleeve.
NOTE: seals should not be removed from pilot spool. Seals are not sold
separately.

Finding spares a nightmare?
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PRODUCTS: AODDP

(Air Operated Double Diaphragm Pumps)

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PUMP PARTS

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KNOWLEDGE & SERVICE

• Competitive pricing

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These parts may exhibit

WARNING:

better life than OEM parts.

WIL-12310-E-04 31 WILDEN PUMP & ENGINEERING, LLC

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simply sell pump parts; we provide value added procurement solutions.

Our unique network enables us to purchase effectively, resulting in low
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REASSEMBLY HINTS & TIPS

ASSEMBLY:

Upon performing applicable maintenance to the air
distrib ution system, the p ump can now be reass embled.
Please refer to the disassembly instructions for photos
and parts placement. To reassemble the pump, follow
the disassembly instructions in reverse order. The
air distribution system needs to be assembled fi rst,
then the diaphragms and fi nally the wetted path. The
following tips will assist in the assembly process.

• Lubricate air valve bore, center section shaft and pilot
spool bore with NLGI grade 2 white EP bearing grease
or equivalent.

• Clean the inside of the center section shaft bore to
ensure no damage is done to new shaft seals.

• A small amount of NLGI grade 2 white EP bearing
grease can be applied to the muffl er and air valve
gaskets to locate gaskets during assembly.

• Make sure that the exhaust port on the muffl er plate
is centered between the two exhaust ports on the
center section.

• Stainless bolts should be lubed to reduce the
possibility of seizing during tightening.

• Use a mallet to tap lightly on the large clamp bands
to seat the diaphragm before tightening.

MAXIMUM TORQUE SPECIFICATIONS

Description of Part Max. Torque

Air Valve 13.6 N·m (120 in-lbs)

Air Chamber Bolts 27.1 N·m (20 ft-lbs)

Outer Pistons, All 54.2 N·m (40 ft-lbs)

Center Block-to-Stand Bolt 44.7 N·m (33 ft-lbs)

Center Block-to-Bushing Bolt 44.7 N·m (33 ft-lbs)

Locking Pin 44.7 N·m (33 ft-lbs)

Anti-Rotation Bolt 67.8 N·m (50 ft-lbs)

Twist

Off-Set

Valve

Housing

NOTE: To ensure prop e r

alignment during reas­sembly of manifold/liquid
chamber interface, turn
off-set portion of valve
housing to the left or to
the right. This procedure
works for the inlet mani­fold and discharge mani­fold connections.

SHAFT SEAL INSTALLATION:

PRE-INSTALLATION

• Once all of the old seals have been removed, the
inside of the bushing should be cleaned to ensure
no debris is left that may cause premature damage
to the new seals.

INSTALLATION

The following tools can be used to aid in the installation
of the new seals:

Needle Nose Pliers
Phillips Screwdriver
Electrical Tape

• Wrap electrical tape around each leg of the needle nose
pliers (heat shrink tubing may also be used). This is done
to prevent damaging the inside surface of the new seal.

• With a new seal in hand, place the two legs of the needle
nose pliers inside the seal ring. (See Figure A.)

• Open the pliers as wide as the seal diameter will allow,
then with two fi ngers pull down on the top portion of
the seal to form kidney bean shape. (See Figure B.)

• Lightly clamp the pliers together to hold the seal into
the kidney shape. Be sure to pull the seal into as tight
of a kidney shape as possible, this will allow the seal to
travel down the bushing bore easier.

• With the seal clamped in the pliers, insert the seal into
the bushing bore and position the bottom of the seal
into the correct groove. Once the bottom of the seal is
seated in the groove, release the clamp pressure on the
pliers. This will allow the seal to partially snap back to its
original shape.

• After the pliers are removed, you will notice a slight
bump in the seal shape. Before the seal can be properly
resized, the bump in the seal should be removed as
much as possible. This can be done with either the
Phillips screwdriver or your fi nger. With either the side
of the screwdriver or your fi nger, apply light pressure
to the peak of the bump. This pressure will cause the
bump to be almost completely eliminated.

• Lubricate the edge of the shaft with
white EP bearing grease.

• Slowly insert the center shaft with a rotating motion.
This will complete the resizing of the seal.

• Perform these steps for the remaining seals.

Figure A

SHAFT SEAL

Figure B

NLGI grade 2

NEEDLE NOSE

PLIERS

TAPE

WILDEN PUMP & ENGINEERING, LLC 32 WIL-12310-E-04

SHAFT SEAL

TAPE

Section 8

CLEANING - CIP

The design of the PX8 HS pump allows for ease
of cleaning and can be cleaned in place without
disassembly. Before any cleaning is attempted, ensure
that the cleaning fl uids are compatible with all wetted
components.

For best cleaning results consider the following
information prior to cleaning the PX8 HS pump.

• For best Clean in Place (CIP) results, the pump
should be confi gured to either the EHEDG or
3-A confi gurations.

• Actual CIP effectiveness with pump user’s product(s)
and processes should be validated on location by
the end user’s quality assurance personnel to meet
internal guidelines. Post cleaning swab test is one
method to accomplish this.

• The pump user should establish periodic inspections
with full tear down to verify that the CIP processes
continue to be effective as fi rst validated.

• Inlet pressure to the pump should not be greater
than 0.7 bar 10 (psig). Premature diaphragm failure
will occur if greater than 0.7 bar (10 psig) is applied.
If the pump is to be subjected to greater than 0.7 bar
(10 psig), an optional diaphragm balancing device
is suggested to eliminate the possibility of the
diaphragms being forced against the air chamber
and subsequently causing premature diaphragm
failure.

• Suggested fl ow rate for the PX8 HS pump is 50
gpm/11 m

• Typical CIP temperature is 77 °C to 82 °C (170 °F to
180 °F).

• Typical chemicals include NaOH (sodium hydroxide)
caustic for wash and light acid and sanitizers for
rinse.

• Once an initial CIP regimen is established, it may
need to be modifi ed to accommodate specifi c
process and product differences or requirements.
The most common adjustments include:

º

º

• The cleaning variables are related so that a pump
user may be able to reduce the cleaning time by
increasing the fl ow rate or chemical mix.

• Chlorinated sanitizers are known to cause premature
failure of stainless steel and should be avoided.

To Clean Pump

• Activate the CIP system while slowly cycling the
pump.

NOTE: A typical the CIP temperature limit is 90 °C

(195 °F). If the CIP temperature is greater than 90 °C
(195 °F), damage to the pump may occur.

3

/hr (usually higher is better).

Changing cleaning time (extended or reduced

pre-rinse, wash, rinses).

Changing cleaning fl ow rate.

The following are some details to consider when
cleaning the PX8 HS pump.

• Through the EHEDG certifi cation process, the PX8
HS pump has been validated to clean equivalent to
the inlet tubing of the same diameter. The cleaning
chemical supplier should be consulted and advised
of this for their chemical solution and application.
The same guideline for duration of cleaning cycle
and temperature of cleaning fl uid apply.

WIL-12310-E-04 33 WILDEN PUMP & ENGINEERING, LLC

Section 9

EXPLODED VIEW & PARTS LISTING

PX8 SANIFLO™ HS

MUSHROOM

SWIVEL STAND OPTION

FLAP

EXPLODED VIEW

FULL STROKE
RUBBER / TPE

FULL STROKE IPD

FULL
STROKE
IPD W/3-A
BACK UP

FULL STROKE PTFE

REDUCED STROKE PTFE

REDUCED
STROKE
IPD W/3-A BACKUP

REDUCED STROKE
ULTRA-FLEX

WILDEN PUMP & ENGINEERING, LLC 34 WIL-12310-E-04

TM

EXPLODED VIEW & PARTS LISTING

PX8 SANIFLO™ HS

PARTS LISTING

NICKEL PLATED ADS STAINLESS STEEL ADS

Item Description Qty

1 Air Valve, Pro-Flo V™

2 O-Ring (-225), End Cap (Ø1.858” x Ø.139”) 2 04-2390-52-700 04-2390-52-700 04-2390-52-700 04-2390-52-700 04-2390-52-700 04-2390-52-700
3 End Cap, Pro-Flo V™ 2 04-2340-06 04-2340-06 04-2340-06 04-2340-03 04-2340-03 04-2340-03

4 Gasket, Air Valve, Pro-Flo V™ 1 04-2620-52 04-2620-52 04-2620-52 04-2620-52 04-2620-52 04-2620-52
5 Gasket, Muffler Plate, Pro-Flo V™ 1 04-3502-52 04-3502-52 04-3502-52 04-3502-52 04-3502-52 04-3502-52

6 Muffler Plate, Pro-Flo V™ 1 04-3185-06 04-3185-06 04-3185-06 04-3185-03 04-3185-03 04-3185-03
7 Screw, SHC, Air Valve (1/4”-20 X 4.5”) 4 01-6000-03 01-6000-03 01-6000-03 01-6000-03 01-6000-03 01-6000-03
8 Screw, 10-32 X .50 Self-Tapping Grounding 1 04-6345-08 04-6345-08 04-6345-08 04-6345-08 04-6345-08 04-6345-08
9 Sanitary Muffler 1 15-3510-06R 15-3510-06R 15-3510-06R 15-3510-06R 15-3510-06R 15-3510-06R

10 Gasket, Center Block, Pro-Flo V™ 2 04-3529-52 04-3529-52 04-3529-52 04-3529-52 04-3529-52 04-3529-52
11 Bushing, Shaft 2 08-3306-13 08-3306-13 08-3306-13 08-3306-13 08-3306-13 08-3306-13
12 Shaft Seal 2 08-3210-55-225 08-3210-55-225 08-3210-55-225 08-3210-55-225 08-3210-55-225 08-3210-55-225

13 Center Block, Pro-Flo X™ 1 08-3126-06 08-3126-06 08-3126-06 08-3126-03 08-3126-03 08-3126-03

14 O-Ring (-210), Adjuster (Ø.734” x Ø.139”) 1 02-3200-52 02-3200-52 02-3200-52 02-3200-52 02-3200-52 02-3200-52
15 Removable Pilot Sleeve Assembly 1 04-3880-99 04-3880-99 04-3880-99 04-3880-99 04-3880-99 04-3880-99
16 Pilot Spool Retaining O-Ring 2 04-2650-49-700 04-2650-49-700 04-2650-49-700 04-2650-49-700 04-2650-49-700 04-2650-49-700

17 Air Chamber, Pro-Flo V™ 2 04-3660-06 04-3660-06 04-3660-06 04-3660-03 04-3660-03 04-3660-03
18 Retaining Ring 2 04-3890-03 04-3890-03 04-3890-03 04-3890-03 04-3890-03 04-3890-03
19 Screw, HSFHS, 3/8”-16 X 1” 8 71-6250-03 71-6250-03 71-6250-03 71-6250-03 71-6250-03 71-6250-03
20 Plug, 1/4” SHCS (3-A) 4 N/A N/A 02-7825-17 N/A N/A 02-7825-17

1

PX8 HS

P/N

AIR DISTRIBUTION COMPONENTS

1 04-2030-06 04-2030-06 04-2030-06 04-2030-03 04-2030-03 04-2030-03

WETTED PATH COMPONENTS

▲

21 Chamber, Liquid CIP 2” EHEDG 2 08-5000-10-385P 08-5000-10-385P 08-5000-10-385P 08-5000-10-385P 08-5000-10-385P 08-5000-10-385P

22 Clamp Band ASSY, 3” 8 15-7102-03 15-7102-03 15-7102-03 15-7102-03 15-7102-03 15-7102-03

▲

23 Elbow, 2” EHEDG 4 08-5240-10-385P 08-5240-10-385P 08-5240-10-385P 08-5240-10-385P 08-5240-10-385P 08-5240-10-385P

▲

24 T-Section, 2” EHEDG 2 08-5160-10-385P 08-5160-10-385P 08-5160-10-385P 08-5160-10-385P 08-5160-10-385P 08-5160-10-385P

T-Section, 2” EHEDG DIN 2 08-5160-10-386P 08-5160-10-386P N/A 08-5160-10-386P 08-5160-10-386P N/A

T-Section, 2” EHEDG SMS 2 08-5160-10-387P 08-5160-10-387P N/A 08-5160-10-387P 08-5160-10-387P N/A
25 Clamp Band, Assy, Medium 4 02-7200-03-85 02-7200-03-85 02-7200-03-85 02-7200-03-85 02-7200-03-85 02-7200-03-85
26 Clamp Band Assy.
27 Bolt, RHSN, 5/16”-18 X 2 1/2” 4 04-6070-03 04-6070-03 04-6070-03 04-6070-03 04-6070-03 04-6070-03
28 Washer, (Ø.343 X Ø.750 X .05) 4 01-6732-03 01-6732-03 01-6732-03 01-6732-03 01-6732-03 01-6732-03
29 Wing Nut, Medium Clamp 4 08-6661-10 08-6661-10 08-6661-10 08-6661-10 08-6661-10 08-6661-10

2

Large 2 04-7330-03-385 04-7330-03-385 04-7330-03-385 04-7330-03-385 04-7330-03-385 04-7330-03-385

GASKETS/VALVE BALLS/MUSHROOM VALVE

▲

30 Gasket, 2” 4 * * * * * *

▲

31 Gasket, 3” 8 * * * * * *

▲

32 Valve Ball 4 * * * * * *

▲

33 Mushroom Valve 4 08-1096-55 N/A N/A 08-1096-55 N/A N/A

CHECK VALVE COMPONENTS

▲

34 Ball Cage, 2” EHEDG 4 08-5350-10-385P 08-5350-10-385P 08-5350-10-385P 08-5350-10-385P 08-5350-10-385P 08-5350-10-385P

▲

35 Mushroom Valve Housing 4 08-5431-10-385P N/A N/A 08-5431-10-385P N/A N/A

▲

36 Flap Valve Spacer 2” 4 08-5285-10-83P N/A N/A 08-5285-10-83P N/A N/A

▲

37 Flap Valve 2” 4 08-1180-10-83P N/A N/A 08-1180-10-83P N/A N/A

▲

38 Flap Valve Body 2” 4 08-5280-10-83P N/A N/A 08-5280-10-83P N/A N/A

FULL STROKE RUBBER/TPE/PTFE/FSIPD COMPONENTS

39 Shaft, Pro-Flo™, Non-PTFE 1 04-3800-03-700 04-3800-03-700 04-3800-03-700 04-3800-03-700 04-3800-03-700 04-3800-03-700
40 Shaft Stud, 1/2”-20 X 1 7/8” 2 08-6150-08 08-6150-08 08-6150-08 08-6150-08 08-6150-08 08-6150-08
41 Piston, Inner, P4 (Non-PTFE) 2 04-3700-01-700 04-3700-01-700 04-3700-01-700 04-3700-01-700 04-3700-01-700 04-3700-01-700

42 Diaphragm, Full Stroke PTFE, Back-Up 2 * N/A N/A * N/A N/A

Diaphragm, Full Stroke IPD, Back-Up (3-A) 2 N/A N/A 04-1061-55 N/A N/A 04-1061-55

▲

43 Diaphragm, Primary 2 * N/A N/A * N/A N/A

Diaphragm, Full Stroke PTFE, Primary 2 04-1040-55 N/A N/A 04-1040-55 N/A N/A

Diaphragm, Full Stroke IPD, Primary 2 N/A 04-1031-57 04-1031-57 N/A 04-1031-57 04-1031-57

▲

44 Piston, Outer, (Non-PTFE) 2 04-4550-10-385P N/A N/A 04-4550-10-385P N/A N/A

REDUCED STROKE ULTRA-FLEX™ COMPONENTS

39 Shaft, Pro-Flo™, Ultra-Flex™ 1 04-3830-03-700 N/A N/A 04-3830-03-700 N/A N/A
40 Shaft Stud, 3/8”-16 X 1-1/2” 2 04-6152-08 N/A N/A 04-6152-08 N/A N/A
41 Piston, Inner, P4 (Ultra-Flex™) 2 04-3760-01-700 N/A N/A 04-3760-01-700 N/A N/A

Diaphragm, Primary, Ultra-Flex™ 2 * N/A N/A * N/A N/A

▲

43

▲

44 Piston, Outer, Ultra-Flex™ 2 04-4560-10-385P N/A N/A 04-4560-10-385P N/A N/A

*Refer to Elastomer Chart

▲

Product Contact Components

1

Includes: items 2 and 3.

2

Includes: items 27, 28 and 29.

All boldface items are primary wear parts.

PX8 HS EHEDG

P/N

PX8 HS 3-A

P/N

PX8 HS

P/N

PX8 HS EHEDG

P/N

PX8 HS 3-A

P/N

WIL-12310-E-04 35 WILDEN PUMP & ENGINEERING, LLC

EXPLODED VIEW & PARTS LISTING (CON'T)

PX8 SANIFLO™ HS

PARTS LISTING

NICKEL PLATED ADS STAINLESS STEEL ADS

Item Description Qty

PX8 HS

P/N

REDUCED STROKE PTFE/SIPD COMPONENTS

39 Shaft, Pro-Flo™ 1 04-3820-03-700 04-3820-03-700 04-3820-03-700 04-3820-03-700 04-3820-03-700 04-3820-03-700
40 Shaft Stud, 1/2”-20 X 1-1/2” 2 04-6150-08 04-6150-08 04-6150-08 04-6150-08 04-6150-08 04-6150-08
41 Piston, Inner, PTFE 2 04-3752-01 N/A N/A 04-3752-01 N/A N/A

Piston, Inner, 1 1/2” EHEDG 2 N/A 04-3755-01 04-3755-01 N/A 04-3755-01 04-3755-01

42 Diaphragm, Back-Up 2 * N/A N/A * N/A N/A

Diaphragm, Back-Up, IPD (3-A) 2 N/A N/A 04-1060-55 N/A N/A 04-1060-55

▲

43 Diaphragm, Primary PTFE 2 04-1010-55 N/A N/A 04-1010-55 N/A N/A

Diaphragm, Integral Piston 2 N/A 04-1030-72 04-1030-72 N/A 04-1030-72 04-1030-72

▲

44 Piston, Outer, PTFE 2 04-4600-10-385P N/A N/A 04-4600-10-385P N/A N/A

45 Stand, Pump, PV Assy.
46 Nut, Cap, 5/16”-18, Pump Stand 4 08-6600-03-72 08-6600-03-72 08-6600-03-72 08-6600-03-72 08-6600-03-72 08-6600-03-72
47 Pad, Pump Stand 4 08-7670-20 08-7670-20 N/A 08-7670-20 08-7670-20 N/A
48 Washer, Flat (Ø.406 X Ø.812 X .065) 2 04-6740-03 04-6740-03 N/A 04-6740-03 04-6740-03 N/A
49 Screw, HHC, 3/8”-16 X 1-1/4” 2 04-6190-03 04-6190-03 04-6190-03 04-6190-03 04-6190-03 04-6190-03

3

1 08-7652-03 08-7652-03 N/A 08-7652-03 08-7652-03 N/A

FIXED STAND COMPONENTS

SWIVEL STAND COMPONENTS

50 Pump Stand, Swivel, Assy.4 (3-A) 1 08-7655-03 08-7655-03 08-7655-03 08-7655-03 08-7655-03 08-7655-03
51 Bushing, Center Block Mounting 1 15-7665-03 15-7665-03 15-7665-03 15-7665-03 15-7665-03 15-7665-03
52 Locking Pin 1 08-7694-03 08-7694-03 08-7694-03 08-7694-03 08-7694-03 08-7694-03
53 Screw, HHC, 1/2”-13 X 6” 1 15-6143-03 15-6143-03 15-6143-03 15-6143-03 15-6143-03 15-6143-03
49 Screw, HHC, 3/8”-16 X 1-1/4” 2 04-6190-03 04-6190-03 04-6190-03 04-6190-03 04-6190-03 04-6190-03
46 Nut, Cap, 5/16”-18, Pump Stand 4 08-6600-03-72 08-6600-03-72 08-6600-03-72 08-6600-03-72 08-6600-03-72 08-6600-03-72
54 Pad, Pump Stand 2” (3-A) 4 08-7672-20 08-7672-20 08-7672-20 08-7672-20 08-7672-20 08-7672-20

ACCESSORY COMPONENTS

55 Control Module, Wil-Gard II, 110 (3-A) 1 65-8001-99 65-8001-99 65-8001-99 65-8001-99 65-8001-99 65-8001-99
56 Sensor Cables, Wil-Gard II (3-A) 1 65-8020-99 65-8020-99 65-8020-99 65-8020-99 65-8020-99 65-8020-99

*Refer to Elastomer Chart

▲

Product Contact Components

3

Includes: items 46 and 47.

4

Includes: items 46, 51, 52, 53 and 54.

All boldface items are primary wear parts.

PX8 HS EHEDG

P/N

PX8 HS 3-A

P/N

PX8 HS

P/N

PX8 HS EHEDG

P/N

PX8 HS 3-A

P/N

WILDEN PUMP & ENGINEERING, LLC 36 WIL-12310-E-04

Section 10

ELASTOMER OPTIONS

PX8 SANIFLO™ HS

MATERIAL

FDA BUNA-N

(Color Code)

(2 yellow dots)

FDA EPDM

SANIFLEX™

PTFE

FULL STROKE PTFE

DIAPHRAGMS

FDA WIL-FLEX™

FDA VITON

®

(2 orange dots)

** See BOM Chart

▲

Product Contact Components

BACK-UP

DIAPHRAGMS

REDUCED STROKE

(Color Code)

04-1010-69

04-1010-74

(2 blue dots)

04-1010-56

(cream)

** N/A N/A N/A

04-1040-55

(white)

04-1022-57

N/A N/A N/A N/A N/A

N/A N/A

04-1060-54

(blue dot)

04-1060-56

(cream)

N/A N/A N/A

N/A

BACK-UP

DIAPHRAGMS

FULL STROKE

(Color Code)

N/A

04-1065-56

(cream)

04-1065-57

(2 orange dots)

ULTRA-FLEX™
DIAPHRAGMS

(Color Code)

04-1020-52

(red dot)

04-1020-54

(blue dot)

N/A

N/A

VALVE BALL

(Color Code)

08-1086-69

(2 yellow dots)

08-1086-74

(2 blue dots)

08-1086-56

(cream)

08-1086-55

(white)

08-1086-55

(white)

08-1086-57

(2 orange dots)

GASKET, 2”

(Color Code)

08-1375-69

(red dot)

08-1375-74

(green dot)

N/A N/A

08-1375-55

(white)

08-1375-55

(white)

N/A N/A

02-1400-68-85

(white/yellow)

GASKET, 3”

(Color Code)

15-1375-69

(red dot)

15-1375-74

(green dot)

15-1375-55

(white)

15-1375-55

(white)

15-1375-68

(white/yellow)

WIL-12310-E-04 37 WILDEN PUMP & ENGINEERING, LLC

Initially Issued: 6/22/1995 Authorization No.: 833

R

This Is To Certify That

Wilden Pump & Engineering LLC

22069 Van Buren Street, Grand Terrace, CA 92313-5651

Is hereby authorized to continue to apply the 3-A Symbol to the models of equipment,
conforming to 3-A Sanitary Standards for:

Diaphragm Pumps, Number: 44-03, set forth below:

Model Designations: See Attached List

Valid through: December 31, 2010

Timothy R. Rugh

_______________________

Executive Director, 3-A Sanitary Standards, Inc.

*****
The issuance of this authorization for the use of the 3-A Symbol is based upon the
voluntary certification, by the applicant for it, that the equipment listed above complies
fully with the 3-A Sanitary Standards designated. Legal responsibility for compliance is
solely that of the holder of this Certificate of Authorization, and 3-A Sanitary Standards,
Inc. does not warrant that the holder of an authorization at all times complies with the
provisions of the said 3-A Sanitary Standards. This in no way affects the responsibility
of 3-A Sanitary Standards, Inc. to take appropriate action in such cases in which evidence
of nonconformance has been established.

Next TPV Inspection/Report due: January 2014

NOTES

WILDEN PUMP & ENGINEERING, LLC 40 WIL-12310-E-04

WARRANTY

Each and every product manufactured by Wilden Pump and Engineering, LLC is built to meet the highest
standards of quality. Every pump is functionally tested to insure integrity of operation.

Wilden Pump and Engineering, LLC warrants that pumps, accessories and parts manufactured or supplied by
it to be free from defects in material and workmanship for a period of five (5) years from date of installation or
six (6) years from date of manufacture, whichever comes first. Failure due to normal wear, misapplication, or
abuse is, of course, excluded from this warranty.

Since the use of Wilden pumps and parts is beyond our control, we cannot guarantee the suitability of any pump
or part for a particular application and Wilden Pump and Engineering, LLC shall not be liable for any consequential
damage or expense arising from the use or misuse of its products on any application. Responsibility is limited
solely to replacement or repair of defective Wilden pumps and parts.

All decisions as to the cause of failure are the sole determination of Wilden Pump and Engineering, LLC.

Prior approval must be obtained from Wilden for return of any items for warranty consideration and must be
accompanied by the appropriate MSDS for the product(s) involved. A Return Goods Tag, obtained from an
authorized Wilden distributor, must be included with the items which must be shipped freight prepaid.

The foregoing warranty is exclusive and in lieu of all other warranties expressed or implied (whether written or oral)
including all implied warranties of merchantability and fitness for any particular purpose. No distributor or other
person is authorized to assume any liability or obligation for Wilden Pump and Engineering, LLC other than expressly
provided herein.

PLEASE PRINT OR TYPE AND FAX TO WILDEN

PUMP INFORMATION

Item # Serial #

Company Where Purc hased

YOUR INFORMATION

Company Name

Industry

Name Title

Street Address

City State Postal Code C ountry

Telephone Fax E- mail Web Addre ss

Number of pumps in facility? Number of Wilden pumps?

Types of pumps in facility (check all that apply): Diaphragm

Media being pumped?

Other

Centrifugal

Gear

Submersible

Lobe

How did you hear of Wilden Pump?

Other

NOTE: WARRANTY VOID IF PAGE IS NOT FAXED TO WILDEN

Trade Journal

Trade Show

ONCE COMPLETE, FAX TO [phone]

WILDEN PUMP & ENGINEERING, LLC

Internet/E-mail

Distributor