Wilden P400, PX400 Engineering, Operation & Maintenance

EOM

Engineering

Operation &

Maintenance

P400/PX400

Plastic Pump

Where Innovation Flows

www.wildenpump.com

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. P400 Plastic Performance Curves

Rubber-Fitted ....................................................... 6

TPE-Fitted .......................................................... 6

Reduced-Stroke PTFE-Fitted .......................................... 7

Full-Stroke PTFE-Fitted ............................................... 7

Suction-Lift Curves .................................................... 8

B. PX400 Plastic Performance

Operating Principle ....................................................10

How to Use this EMS Curve .............................................11

Perf orman c e Cur ve s

Rubber-Fitted ....................................................14

TPE-Fitted .......................................................15

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

Full-Stroke PTFE-Fitted ............................................17

Suction-Lift Curves ....................................................18

SECTION 6 SUGGESTED INSTALLATION, OPERATION & TROUBLESHOOTING ......19

SECTION 7 DISASSEMBLY / REASSEMBLY ........................................22

Pro-Flo® Air Valve / Center Section Disassembly ...............................25

Pro-Flo X

Reassembly Hints & Tips ..................................................30

TM

Air Valve / Center Section Disassembly .............................28

SECTION 8 EXPLODED VIEW & PARTS LISTING

P400 Plastic .............................................................32

PX400 Plastic ...........................................................34

SECTION 9 ELASTOMER OPTIONS ................................................36

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 lub rication will reduce pump perfor mance.
Pump is pre-lubed.

TEMPERATURE LIMITS:

Acetal –29°C to 82°C –20°F to 180°F
Buna-N –12°C to 82°C 10°F to 180°F
Geolast

®

–40°C to 82°C –40°F to 180°F
Neoprene –18°C to 93°C 0°F to 200°F
Nordel

®

EPDM –51°C to 138°C –60°F to 280°F
Nylon –18°C to 93°C 0°F to 200°F
PFA –7°C to 107°C 45°F to 225°F
Polypropylene 0°C to 79°C 32°F to 175°F
Polyurethane –12°C to 66°C 10°F to 150°F
PVDF –12°C to 107°C 10°F to 225°F
Saniflex™ –29°C to 104°C –20°F to 220°F

SIPD PTFE with EPDM-backed

SIPD PTFE with Neoprene-backed
PTFE
Viton

1

4°C to 104°C 40°F to 220°F

®

FKM –40°C to 177°C –40°F to 350°F

4°C to 137°C 40°F to 280°F

4°C to 93°C 40°F to 200°F

Wil-Flex™ –40°C to 107°C –40°F to 225°F

1

4°C to 149°C (40°F to 300°F) - 13 mm (1/2") and 25 mm (1") models only.

NOTE: Not all materials are available for all

models. Refer to Section 2 for material options

for your pump.

CAUTION: When choosing pump materials, be

sure to check the temperature limits for all wetted

components. Example: Viton® has a maximum

limit of 177°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 significantly reduce maximum

safe operating temperatures. Consult Chemical

Resistance Guide for chemical compatibility and

temperature limits.

WARNING : Prevent static sparking — If static

sparking occurs, fire or explosion could result.

Pump, valves, and containers must be grounded

to a proper grounding point when handling

flammable fluids and whenever discharge of

static electricity is a hazard.

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

supply pressure.

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

temperature for Pro-Flo X™ models.

CAUTION: Pumps should be thoroughly flushed

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 fluid
to flow 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 filter. A
5μ (micron) air filter is recommended.

NOTE: When installing PFTE diaphragms, it is

important to tighten outer pistons simultaneously
(turning in opposite directions) to ensure tight fit.
(See torque specifications in Section 7.)

NOTE: PVDF pumps come standard from the

factory with expanded PTFE gaskets installed
in the diaphragm bead of the liquid chamber,
in the T-section and in the ball and seat area.
PTFE gaskets cannot be re-used. Consult 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: Pro-Flo® pumps cannot be used in

submersible applications. Pro-Flo X™ is available
in both single-point exhaust (submersible) and
standard (non-submersible) options. Do not use
standard Pro-Flo X™ models in submersible
applications. Turbo-Flo™ pumps are also
available in a single-point exhaust (submersible)
configuration.

CAUTION: The process fluid and cleaning fluids

CAUTION : Tighten all hardware prior to installation.

must be chemically compatible with all wetted

pump components. Consult Chemical Resistance

Guide.

WIL-11240-E-05 1 WILDEN PUMP & ENGINEERING, LLC

Section 2

WILDEN PUMP DESIGNATION SYSTEM

P400/PX400
PLASTIC

38 mm (1-1/2") Pump
Maximum Flow Rate:
450 lpm (119 gpm)

LEGEND

PX400 / XXXXX / XXX / XX / XXX / XXXX

MODEL

MATERIAL CODES

MODEL

P400 = PRO‑FLO
PX400 = PRO‑FLO X™

WETTED PARTS & OUTER PISTON

KK = PVDF / PVDF
KZ = PVDF / NO OUTER PISTON
PP = POLYPROPYLENE /

POLYPROPYLENE

PZ = POLYPROPYLENE / NO

OUTER PISTON

AIR CHAMBERS

P = POLYPROPYLENE

CENTER BLOCK

P = POLYPROPYLENE

AIR VALVE

P = POLYPROPYLENE

®

DIAPHRAGMS

VALVE BALLS

AIR VALVE

CENTER BLOCK

AIR CHAMBERS

WETTED PARTS & OUTER PISTON

DIAPHRAGMS

BNS = BUNA‑N (Red Dot)
EPS = EPDM (Blue Dot)
FSS = SANIFLEX™

[Hytrel® (Cream)]

FWL = SANITARY WIL‑FLEX™,

IPD

FWS = SANITARY WIL‑FLEX™,

EZ‑INSTALL [Santoprene®

(Two Orange Dots)]
NES = NEOPRENE (Green Dot)
PUS = POLYURETHANE (Clear)
TEU = PTFE W/EPDM
BACK‑UP (White)
TNU = PTFE W/NEOPRENE
BACK‑UP (White)
TSS = FULL STROKE PTFE
W/SANIFLEX™ BACK‑UP
TSU = PTFE W/SANIFLEX™

BACK‑UP (White)
TWS = FULL STROKE PTFE

W/WIL‑FLEX™ BACK‑UP
VTS = VITON® (White Dot)
WFS = WIL‑FLEX™ [Santoprene®

(Orange Dot)]
ZGS = GEOLAST®, EZ‑INSTALL
ZPS = POLYURETHANE,

EZ‑INSTALL
ZSS = SANIFLEX™, EZ‑INSTALL
ZWL = WIL‑FLEX™, INTEGRAL

PISTON
ZWS = WIL‑FLEX™, EZ‑INSTALL

O-RINGS

VALVE SE ATS

VALVE BALLS

BN = BUNA‑N (Red Dot)
EP = EPDM (Blue Dot)
FS = SANIFLEX™

FW = SANITARY WIL‑FLEX™

NE = NEOPRENE (Green Dot)
PU = POLYURETHANE (Clear)
TF = PTFE (White)
VT = VITON® (White Dot)
WF = WIL‑FLEX™ [Santoprene®

VALVE SEATS

K = PVDF
P = POLYPROPYLENE

VALVE SEAT O-RINGS

BN = BUNA‑N
TV = PTFE ENCAP. VITON
WF = WIL‑FLEX™ (Santoprene®)

SPECIALT Y
CODE

(if applicable)

[Hytrel® (Cream)]

[Santoprene® (Two Orange
Dots)]

(Orange Dot)]

®

SPECIALTY CODES

0100 Wil‑Gard II™ 110V
0102 Wil‑Gard II™, sensor wires ONLY
0103 Wil‑Gard II™ 220V
0320 Single‑point exhaust
0502 PFA‑coated hardware
0504 DIN flange
0506 DIN flange, PFA coated hardware
0604 DIN flange Wil‑Gard II™ 220V

NOTE: Most elastomeric materials use colored dots for identification.

Viton® is a registered trademark of DuPont Dow Elastomers.

WILDEN PUMP & ENGINEERING, LLC 2 WIL-11240-E-05

Section 3

HOW IT WORKS—PUMP

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

FIGUR E 1 The air valve dire cts 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; a balanced
load removes 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 por t of
the pump. The movement of diaphragm
B toward the center of the pump creates
a vacuum within chamber B. Atmos pheric
pressure forces fluid into the inlet
manifold forcing the inlet valve ball off its
seat. Liquid is free to move past the inlet
valve ball and fill the liquid chamber (see
shaded area).

HOW IT WORKS—AIR DISTRIBUTION SYSTEM

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. The
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 fluid to flow 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 fluid into the inlet
manifold of the pump. The inlet valve ball
is forced off its seat allowing the fluid being
pumped to fill the liquid chamber.

The Pro-Flo
moving parts: the air valve spool and the pilot spool. The heart of
the system is the air valve spool and air valve. This valve design
incorporates an unbalanced spool. The smaller end of the spool
is pressurized continuously, while the large end is alternately
pressurized then exhausted to move the spool. The spool directs
pressurized air to one air chamber while exhausting the other.
The air causes the main shaft/diaphragm assembly to shif t to
one side — discharging liquid on that side and pulling liquid in
on the other side. When the shaf t reaches the end of its stroke,
the inner piston actuates the pilot spool, which pressurizes and
exhausts the large end of the air valve spool. The repositioning
of the air valve spool routes the air to the other air chamber.

®

patented air distribution system incorporates two

FIGURE 3 At completion of the stroke,
the air valve again redirec ts 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.

WIL-11240-E-05 3 WILDEN PUMP & ENGINEERING, LLC

Section 4

DIMENSIONAL DRAWINGS

P400 Polypropylene

DIMENSIONS

ITEM METRIC (mm) STANDARD (inch)

A 476 18.8
B 81 3.2
C 348 13.7
D 602 23.7
E 665 26.2
F 677 26.6
G 131 5.2
H 138 5.4
J 300 11.8
K 351 13.8

L 324 12.8
M 268 10.6
N 208 8.2

P 176 6.9

R 12 0.5

S 91 3.6

DIN FL ANGE

T 110 DIA. 4.3 DIA.

U 150 DIA. 5.9 DIA.

V 18 DIA. 0.7 DIA.

ANSI FLANGE

T 98 DIA. 3.9 DIA.

U 127 DIA. 5.0 DIA.

V 16 DIA. 0.6 DIA.

LW0324 REV. A

P400 PVDF

DIMENSIONS

ITEM METRIC (mm) STANDARD (inch)

A 471 18.5

B 83 3.2

C 345 13.6

D 596 23.4

E 659 25.9

F 670 26.4

G 130 5.1

H 137 5.4

J 300 11.8

K 348 13.7

L 319 12.6
M 264 10.4
N 205 8.1

P 174 6.9

R 12 0.5

S 91 3.6

DIN FL ANGE

T 110 DIA. 4.3 DIA.

U 149 DIA. 5.9 DIA.

V 18 DIA. 0.7 DIA.

ANSI FLANGE

T 98 DIA. 3.9 DIA.

U 126 DIA. 5.0 DIA.

V 16 DIA. 0.6 DIA.

LW0325 REV. A

WILDEN PUMP & ENGINEERING, LLC 4 WIL-11240-E-05

DIMENSIONAL DRAWINGS

PX400 Polypropylene

DIMENSIONS

ITEM METRIC (mm) STANDARD (inch)

A 476 18.8
B 82 3.2
C 348 13.7
D 602 23.7
E 665 26.2
F 677 26.6
G 131 5.2
H 48 1.9
J 138 5.4
K 320 12.6

L 411 16.2
M 356 14.0
N 324 12.8

P 268 10.6

R 176 6.9

S 208 8.2

T 12 0.5

DIN FL ANGE

U 110 DIA. 4.3 DIA.

V 150 DIA. 5.9 DIA.

W 18 DIA. 0.7 DIA.

ANSI FLANGE

U 98 DIA. 3.9 DIA.

V 127 DIA. 5.0 DIA.

W 16 DIA. 0.6 DIA.

LW0326 REV. A

PX400 PVDF

DIMENSIONS

ITEM METRIC (mm) STANDARD (inch)

A 471 18.5

B 83 3.2

C 345 13.6

D 596 23.4

E 659 25.9

F 670 26.4

G 130 5.1

H 48 1.9

J 137 5.4

K 320 12.6

L 411 16.2
M 351 13.8
N 319 12.6

P 264 10.4

R 174 6.9

S 205 8.1

T 12 0.5

DIN FL ANGE

U 110 DIA. 4.3 DIA.

V 149 DIA. 5.9 DIA.

W 18 DIA. 0.7 DIA.

ANSI FLANGE

U 98 DIA. 3.9 DIA.

V 126 DIA. 5.0 DIA.

W 16 DIA. 0.6 DIA.

LW0327 REV. A

WIL-11240-E-05 5 WILDEN PUMP & ENGINEERING, LLC

Section 5A

PERFORMANCE

P400 PLASTIC

RUBBER-FITTED

Ship Weight .......Polypropylene 19 kg (41 lb)

PVDF 27 kg (59 lb)

Air Inlet ................................... 13 mm (1/2")

Inlet ...................................... 38 mm (1-1/2")

Outlet ................................... 38 mm (1-1/2")

Suction Lift ....................... 5.5 m Dry (18.2')

9.0 m Wet (29.5')

Disp. per Stroke1 .............. 1.25 L (0.330 gal)

Max. Flow Rate ............ 454 lpm (120 gpm)

Max. Size Solids ................... 6.4 mm (1/4")

1

Displacement per stroke was calculated at

4.8 bar (70 psig) air inlet pressure against a
2 bar (30 psig) head pressure.

Example: To pump 227 lpm (60 gpm)
against a discharge head pressure of 5.0
bar (73 psig) requires 6.9 bar (100 psig)
and 136 Nm3/h (80 scfm) air consumption.

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

Flow rates indicated on chart were determined by pumping water.

For optimum life and performance, pumps should be specified so that daily operation
parameters will fall in the center of the pump's performance curve.

P400 PLASTIC
TPE-FITTED

Ship Weight .......Polypropylene 19 kg (41 lb)

PVDF 27 kg (59 lb)

Air Inlet ................................... 13 mm (1/2")

Inlet .............................. 38 mm (1-1/2")

Outlet ........................... 38 mm (1-1/2")

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

9.3 m Wet (30.6')

Disp. per Stroke1 ............ 1.34 L (0.353 gal)

Max. Flow Rate ............ 454 lpm (120 gpm)

Max. Size Solids .................... 6.4 mm (1/4")

1

Displacement per stroke was calculated at

4.8 bar (70 psig) air inlet pressure against a
2 bar (30 psig) head pressure.

Example: To pump 151 lpm (40 gpm)
against a discharge head pressure of 4.3
bar (63 psig) requires 5.5 bar (80 psig) and
68 Nm3/h (40 scfm) air consumption.

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

Flow rates indicated on chart were determined by pumping water.

For optimum life and performance, pumps should be specified so that daily operation
parameters will fall in the center of the pump's performance curve.

WILDEN PUMP & ENGINEERING, LLC 6 WIL-11240-E-05

PERFORMANCE

P400 PLASTIC

REDUCED-STROKE PTFE-FITTED

Ship Weight .......Polypropylene 19 kg (41 lb)

PVDF 27 kg (59 lb)

Air Inlet ................................... 13 mm (1/2")

Inlet ...................................... 38 mm (1-1/2")

Outlet ................................... 38 mm (1-1/2")

Suction Lift ....................... 3.3 m Dry (10.8')

9.7 m Wet (31.8')
Disp. per Stroke

Max. Flow Rate .............. 318 lpm (84 gpm)

Max. Size Solids .................... 6.4 mm (1/4")

1

Displacement per stroke was calculated at

4.8 bar (70 psig) air inlet pressure against a
2 bar (30 psig) head pressure.

Example: To pump 178 lpm (47 gpm)
against a discharge head pressure of 3.4
bar (50 psig) requires 5.5 bar (80 psig) and
136 Nm3/h (80 scfm) air consumption.

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

1

............ 0.59 L (0.155 gal)

Flow rates indicated on chart were determined by pumping water.

For optimum life and performance, pumps should be specified so that daily operation
parameters will fall in the center of the pump's performance curve.

P400 PLASTIC
FULL-STROKE PTFE-FITTED

Ship Weight .... Polypropylene 19 kg (41 lb)

PVDF 27 kg (59 lb)

Air Inlet ................................... 13 mm (1/2”)

Inlet ......................................38 mm (1-1/2”)

Outlet ...................................38 mm (1-1/2”)

Suction Lift ............................5.7 Dry (18.7’)

9.3 m Wet (30.6’)
Disp. Per Stroke

Max. Flow Rate ...........424 lpm (111.9 gpm)

Max. Size Solids ....................6.4 mm (1/4”)

1

Displacement per stroke was calculated at

4.8 bar (70 psig) air inlet pressure against a

2.1 bar (30 psig)head pressure.

Example: To pump 337 lpm (89 gpm)
against a discharge head of 1.4 bar (20
psig) requires 5.5 bar (80 psig) and 147
Nm³/h (93 scfm) air consumption.

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

1

....................1.1 L (.30 gal)

20[34]

40[68]

60[102]

80[136]

100[170]

10 20 30 40 50 60 70 80 90 100 110 120

[38] [76] [114] [151] [189] [227] [265] [303] [341] [379] [416] [454]

Flow rates indicated on chart were determined by pumping water.

For optimum life and performance, pumps should be specified so that daily operation
parameters will fall in the center of the pump's performance curve.

WIL-11240-E-05 7 WILDEN PUMP & ENGINEERING, LLC

SUCTION-LIFT CURVES

P400 PLASTIC
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 that can affect your
pump's operating characteristics.
The number of intake and discharge
elbows, viscosity of pumping fluid,
elevation (atmospheric pressure)
and pipe friction loss all affect the
amount of suction lift your pump will
attain.

WILDEN PUMP & ENGINEERING, LLC

8 WIL-11240-E-05

PX400

P L A S T I C

PX400 PERFORMANCE

Section 5B

Pro-Flo X

The Pro-Flo X™ air distribution system with the

revolutionary Efficiency Management System (EMS)

offers flexibility never before seen in the world of

AODD pumps. The

EMS is simple and

easy to use. With the

turn of an integrated

control dial, the

TM

Operating Principle

operator can select the optimal balance of flow and

efficiency that best meets the application needs.

Pro-Flo X™ provides higher performance, lower

operational costs

and flexibility that

exceeds previous

industry standards.

AIR CONSUMPTION

$

$

$

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

WILDEN PUMP & ENGINEERING, LLC 10 PX400 Performance

Each dial setting
represents an
entirely different
flow curve.

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

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

When the air
consumption
decreases more
than the flow
rate, efficiency
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 flow rate and
air consumption for your Pro-Flo X™ pump using the Efficien
cy 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 flow 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 flow curve,
draw a vertical line downward until reaching
the bottom scale on the chart. Identify the flow
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
identifies the flow 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 flow rate (8.2 gpm)

obtained in Step 1 by the flow X Factor multi­plier (0.58) in Step 2 to determine the flow 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

(flow rate for setting 4)

(flow X Factor setting 2)

(flow rate for setting 2)

EMS CURVE

flow 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 flow 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

PX400 Performance 11 WILDEN PUMP & ENGINEERING, LLC

9.8

scfm

(air consumption for setting 4)

.48

4.7

Figure 3

The flow 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 specific application. For this exam
ple we will be using an application requirement of 18.9 lpm
(5 gpm) flow rate against 2.8 bar (40 psig) discharge pressure.
This example will illustrate how to calculate the air consump
tion 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 efficiently, 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 flow 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 Figure 4.

Step 3

: Determine flow X Factor. Divide the required

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

5

gpm / 10.2 gpm = 0.49 (flow X Factor)

EMS CURVE

Figure 5

flow 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 flow

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 flow curve, draw a verti­cal line downward until reaching the bottom
scale on the chart and identify the flow rate.

bar (40 psig) psig discharge pressure line until
it crosses the vertical 0.49 X Factor line. Typi­cally, this point lies between two flow EMS
setting curves (in this case, the point lies be­tween the flow 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 (Figure 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 12 PX400 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 flow 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 (Figure 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.

PX400 Performance 13 WILDEN PUMP & ENGINEERING, LLC

EMS CURVE

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

Setting 3

Flow Flow

Air

Setting 2

Flow Air

PERFORMANCE

/h (60 scfm)

3

Air

Setting 1

X Factor

Multiplier

/h (14 scfm). The flow rate was reduced by 67% while

3

of air when run at 5.5 bar (80 psig) air inlet pressure and 2.8 bar (40

psig) discharge pressure (see dot on performance curve).

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

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

would meet his needs. At 2.8 bar (40 psig) discharge pressure and

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

0.24 (see dots on EMS curve).

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

the setting 1 flow rate of 82 lpm (22 gpm) and an air consumption

EXAMPLE

A PX400 plastic, rubber-fitted pump operating at EMS setting 4,

achieved a flow rate of 250 lpm (66 gpm) using 102 Nm

The Efficiency Management System (EMS)

can be used to optimize the performance of

your Wilden pump for specific applications.

The pump is delivered with the EMS adjusted

to setting 4, which allows maximum flow.

The EMS curve allows the pump user to deter-

mine flow 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 per-

of 24 Nm

formance curve to calculate the actual flow

and air consumption values for that specific

EMS setting. NOTE: You can interpolate be-

tween the setting curves for operation at in-

the air consumption was reduced by 76%, thus providing increased

efficiency.

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.

termediate EMS settings.

SETTING 4 PERFORMANCE CURVE

.................1.2 L (0.31 gal)

1

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

TECHNICAL DATA

Ship Weight ..........Polypropylene 28 kg (62 lb)

PX400 PLASTIC RUBBER-FITTED

PVDF 32 kg (70 lb)

WILDEN PUMP & ENGINEERING, LLC 14 PX400 Performance

...........................38 mm (1-1/2”)

Suction Lift .....................5.5 m Dry (18.2’)

Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . .38 mm (1-1/2”)

Outlet

Air Inlet

9.3 m Wet (30.6’)

Disp. Per Stroke

Max. Flow Rate ...............450 lpm (119 gpm)

Max. Size Solids ..................6.4 mm (1/4”)

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

air inlet pressure against a 2.1 bar (30 psig) head pressure.

1

The Efficiency Management System (EMS) can be used to optimize the performance of your Wilden pump for

specific applications. The pump is delivered with the EMS adjusted to setting 4, which allows maximum flow.

EMS CURVE

PERFORMANCE

/h (71 scfm)

3

/h (36 scfm). The flow rate was reduced by 26% while the

3

air consumption was reduced by 49%, thus providing increased

efficiency.

EXAMPLE

A PX400 plastic, TPE-fitted pump operating at EMS setting 4,

achieved a flow rate of 329 lpm (87 gpm) using 121 Nm

of air when run at 5.5 bar (80 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 flow 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 flow “X factor” is 0.74 and the air “X factor” is

0.51 (see dots on EMS curve).

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

the setting 2 flow rate of 244 lpm (64 gpm) and an air consumption

of 62 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.

The Efficiency Management System (EMS)

can be used to optimize the performance of

your Wilden pump for specific applications.

The pump is delivered with the EMS adjusted

to setting 4, which allows maximum flow.

The EMS curve allows the pump user to deter-

mine flow 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 per-

formance curve to calculate the actual flow

and air consumption values for that specific

EMS setting. NOTE: You can interpolate be-

tween the setting curves for operation at in-

termediate EMS settings.

SETTING 4 PERFORMANCE CURVE

.................1.1 L (0.30 gal)

1

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

...........................38 mm (1-1/2”)

9.0 m Wet (29.5’)

Disp. Per Stroke

TECHNICAL DATA

Ship Weight ..........Polypropylene 28 kg (62 lb)

PX400 PLASTIC TPE-FITTED

PX400 Performance 15 WILDEN PUMP & ENGINEERING, LLC

PVDF 32 kg (70 lb)

Air Inlet

Outlet

Suction Lift .....................5.5 m Dry (18.2’)

Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . .38 mm (1-1/2”)

Max. Flow Rate ...............447 lpm (118 gpm)

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

Max. Size Solids ..................6.4 mm (1/4”)

air inlet pressure against a 2.1 bar (30 psig) head pressure.

1

The Efficiency Management System (EMS) can be used to optimize the performance of your Wilden pump for

specific applications. The pump is delivered with the EMS adjusted to setting 4, which allows maximum flow.

EMS CURVE

PERFORMANCE

/h (56

3

/h (44 scfm). The flow rate was reduced by 13% while

3

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

EXAMPLE

A PX400 plastic, reduced-stroke PTFE-fitted pump operating at EMS

(30 psig) discharge pressure (see dot on performance curve).

setting 4, achieved a flow rate of 182 lpm (48 gpm) using 95 Nm

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

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

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

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

0.78 (see dots on EMS curve).

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

the setting 3 flow rate of 158 lpm (42 gpm) and an air consumption

of 74 Nm

the air consumption was reduced by 22%, thus providing increased

efficiency.

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 Efficiency Management System (EMS)

can be used to optimize the performance of

your Wilden pump for specific applications.

The pump is delivered with the EMS adjusted

to setting 4, which allows maximum flow.

The EMS curve allows the pump user to deter-

mine flow 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 per-

formance curve to calculate the actual flow

and air consumption values for that specific

EMS setting. NOTE: You can interpolate be-

tween the setting curves for operation at in-

termediate EMS settings.

SETTING 4 PERFORMANCE CURVE

.................0.6 L (0.15 gal)

1

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

...........................38 mm (1-1/2”)

7.6 m Wet (25.0’)

Disp. Per Stroke

TECHNICAL DATA

Ship Weight ..........Polypropylene 28 kg (62 lb)

PX400 PLASTIC REDUCED - STROKE PTFE-FITTED

WILDEN PUMP & ENGINEERING, LLC 16 PX400 Performance

PVDF 32 kg (70 lb)

Air Inlet

Outlet

Suction Lift .....................3.6 m Dry (11.9’)

Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . .38 mm (1-1/2”)

Max. Flow Rate ................329 lpm (87 gpm)

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

Max. Size Solids ..................6.4 mm (1/4”)

air inlet pressure against a 2.1 bar (30 psig) head pressure.

1

The Efficiency Management System (EMS) can be used to optimize the performance of your Wilden pump for

specific applications. The pump is delivered with the EMS adjusted to setting 4, which allows maximum flow.

EMS CURVE

PERFORMANCE

/h

3

EXAMPLE

A PX400 plastic, full-stroke PTFE fitted pump operating at EMS

setting 4, achieved a flow rate of 242 lpm (64 gpm) using 80 Nm

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

/h (32 scfm). The flow rate was reduced by 16% while

3

the air consumption was reduced by 31%, thus providing increased

efficiency.

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

performance curve section.

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

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

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

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

EMS setting 3, the flow “X factor” is 0.84 and the air “X factor” is

0.69 (see dots on EMS curve).

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

the setting 3 flow rate of 204 lpm (54 gpm) and an air consumption

of 55 Nm

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

The Efficiency Management System (EMS)

can be used to optimize the performance of

your Wilden pump for specific applications.

The pump is delivered with the EMS adjusted

to setting 4, which allows maximum flow.

The EMS curve allows the pump user to deter-

mine flow 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 per-

formance curve to calculate the actual flow

and air consumption values for that specific

EMS setting. NOTE: You can interpolate be-

tween the setting curves for operation at in-

termediate EMS settings.

SETTING 4 PERFORMANCE CURVE

..................1.1 L (.29 gal)

1

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

...........................38 mm (1-1/2”)

9.0 m Wet (29.5’)

Disp. Per Stroke

TECHNICAL DATA

Ship Weight ..........Polypropylene 28 kg (62 lb)

PX400 PLASTIC FULL - STROKE PTFE-FITTED

PX400 Performance 17 WILDEN PUMP & ENGINEERING, LLC

PVDF 32 kg (70 lb)

Air Inlet

Outlet

Suction Lift .....................5.6 m Dry (18.4’)

Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . .38 mm (1-1/2”)

Max. Flow Rate ...............436 lpm (115 gpm)

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

Max. Size Solids ..................6.4 mm (1/4”)

air inlet pressure against a 2.1 bar (30 psig) head pressure.

1

The Efficiency Management System (EMS) can be used to optimize the performance of your Wilden pump for

specific applications. The pump is delivered with the EMS adjusted to setting 4, which allows maximum flow.

SUCTION-LIFT CURVES

PX400 PLASTIC
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 that can affect your
pump's operating characteristics.
The number of intake and discharge
elbows, viscosity of pumping fluid,
elevation (atmospheric pressure)
and pipe friction loss all affect the
amount of suction lift your pump will
attain.

WILDEN PUMP & ENGINEERING, LLC 18 PX400 Performance

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 flex concerns.

The suction-pipe size should be at least the equivalent or
larger than the diameter size 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 the equivalent
or larger than the diameter of the pump discharge which
will help reduce friction losses. It is critical that all fittings
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
floor. Multiple installations with conflicting 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 several
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. Use air pressure up to
a maximum of 8.6 bar (125 psig) depending on pumping
requirements.

For best results, the pumps should use a 5µ (micron) air
filter, needle valve and regulator. The use of an air filter
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.
Pumping volume can be estimated by counting the number
of strokes per minute and then multiplying the figure by the
displacement per stroke.

MUFFLER: Sound levels are reduced below OSHA
specifications using the standard Wilden muffler. Other

WIL-11240-E-05 19 WILDEN PUMP & ENGINEERING, LLC

mufflers 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 efficiency 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 fittings 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 fittings.

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 specifics.

When pumps are installed in applications involving flooded
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 efficient
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 are
available in both single-point exhaust (submersible) and
standard (non-submersible) options. Do not use standard
Pro-Flo X models in submersible applications. Turbo­Flo™ pumps are also available in a single-point exhaust
(submersible) configuration.

NOTE: Pro-Flo

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.

CAUTION: DO NOT EXCEED 8.6 BAR (125 PSIG) AIR
SUPPLY PRESSURE.

®

and Accu-Flo™ pumps are not submersible.

®

)

SUGGESTED INSTALLATION

This illustration is a generic
representation of an air-operated
double-diaphragm pump.

NOTE: In the event of a power failure, the shut off valve
should be closed, if the 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 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
shut-of f 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 20 WIL-11240-E-05

SUGGESTED OPERATION & MAINTENANCE

OPERATION: The P400 and PX400 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 non-lubricated location, it may
need to be disassembled and re-lubricated as described
in the DISASSEMBLY/REASSEMBLY 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 flow 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

TROUBLESHOOTING

and can be restarted by reducing the fluid discharge
pressure or increasing the air inlet pressure. Wilden
P400 and PX400 pumps run solely on compressed air
and do not generate heat, therefore your process fluid
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 fluid
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.

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 filter for debris (see SUGGESTED
INSTALLATION).

3. Check for extreme air leakage (blow by) that 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 that would obstruct
the movement of internal parts.

5. Check for sticking ball check valves. If material being
pumped is not compatible with pump elastomers,
swelling may occur. Replace ball check valves and
seals 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.

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

7. Remove plug from pilot spool exhaust.

Pump runs but little or no product flows.

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

WIL-11240-E-05 21 WILDEN PUMP & ENGINEERING, LLC

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 filter
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.

Product comes out air exhaust.

1. Check for diaphragm rupture.

2. Check tightness of outer pistons to shaft.

Section 7

PUMP DISASSEMBLY

Tools Required:

• 9/16” Wrench

• 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 fluid to flow into a suitable container. Be aware of any
hazardous effects of contact with your process fluid.

NOTE: The model photographed for these instructions incorporates PTFE
diaphragms, balls, and seats. Models with Rubber diaphragms, balls and seats are
the same except where noted.

Step 1

Please note alignment marks on
liquid chambers. Use to properly
align center section with liquid
chamber.

WILDEN PUMP & ENGINEERING, LLC 22 WIL-11240-E-05

Step 2

Using a 9/16" wrench, loosen the
discharge manifold from the liquid
chambers.

Step 3

Remove the discharge manifold to
expose the valve balls, valve seats
and valve seat O-rings.

PUMP DISASSEMBLY

Step 4

Inspect valve balls, valve seats, and
valve seat O-rings for nicks, gouges,
chemical attack or abrasive wear.

Step 5

Using a 9/16” wrench, loosen the
inlet manifold from the liquid
chambers.

Step 6

Remove the inlet manifold, valve
balls, valve seats and valve seat
O-rings and inspect for nicks,
gouges, chemical attack or abrasive
wear.

Step 7

Using a 9/16” wrench, remove
the liquid chamber fasteners that
secure the liquid chamber to the
center section.

WIL-11240-E-05 23 WILDEN PUMP & ENGINEERING, LLC

Step 8

Remove the liquid chamber to
expose the diaphragm and outer
piston.

Step 9

Using two adjustable wrenches,
or rotating both diaphragms by
hand (counterclockwise), remove
the diaphragm assembly from the
center section assembly.

PUMP DISASSEMBLY

Step 10

Due to varying torque values, one of the
following two situations may occur:

1) The outer piston, diaphragm and

inner piston remain attached to the
shaft and the entire assembly can be
removed from the center section.

2) The outer piston, diaphragm and

inner piston separate from the shaft,
which remains connected to the
opposite side diaphragm assembly.

Step 11

Remove diaphragm assembly from
shaft, secure shaft with soft jaws (a
vise fitted with plywood, plastic or
other suitable material) to ensure
shaft is not nicked, scratched or
gouged. Using an adjustable wrench
or rotating counterclockwise by
hand, remove diaphragm assembly
from shaft.

WILDEN PUMP & ENGINEERING, LLC 24 WIL-11240-E-05

Section 7B

PRO-FLO® AIR DISTRIBUTION SYSTEM (ADS) DISASSEMBLY

Tools Required:

• 3/16” Wrench

• 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 fluid to flow into a suitable container. Be aware of
hazardous effects of contact with your process fluid.

Step 1

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

WIL-11240-E-05 25 WILDEN PUMP & ENGINEERING, LLC

Step 2

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

Step 3

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

PRO-FLO® AIR DISTRIBUTION SYSTEM (ADS) DISASSEMBLY

Step 4

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 5

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.
removed from assembly. Seals are not
sold separately.

NOTE:

Seals should not be

Step 6

Remove pilot sleeve from center
section. To do so, the air chambers
must be removed from the center
block which will expose the pilot
spool sleeve.

WILDEN PUMP & ENGINEERING, LLC 26 WIL-11240-E-05

PRO-FLO® AIR DISTRIBUTION SYSTEM (ADS) DISASSEMBLY

Step 7

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” first, 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.

Step 8

Inspect center section seals for
signs of wear. If necessary, remove
seals with O-ring pick and replace.

WIL-11240-E-05 27 WILDEN PUMP & ENGINEERING, LLC

Section 7C

PRO-FLO X™ AIR DISTRIBUTION SYSTEM (ADS) DISASSEMBLY

Step 1. Figure 1

Loosen the air valve bolts using a 3/16"
hex -head wrench.

Step 4. Figure 4

Step 2. Figure 2

Remove air valve bolts, muffler plate,
and air valve assembly exposing
muffler gasket and air valve gasket.
Replace if necessary.

Step 5. Figure 5

Step 3. Figure 3

Remove air valve end cap to expose
the large end of air valve spool by
simply lifting up on the air valve
end cap once the bolts have been
removed.

Step 6-6A. Figure 6

Remove air valve spool from air
valve body by threading one air
valve bolt into the end of the 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 remove
from assembly. Seals are not sold
separately.

WILDEN PUMP & ENGINEERING, LLC 28 WIL-11240-E-05

Remove pilot spool retaining snap
ring on both sides of the center
section using snap ring pliers.

Remove the air chamber bolts using
a 1/4" hex wrench.

PRO-FLO X™ AIR DISTRIBUTION SYSTEM (ADS) DISASSEMBLY

Step 7. Figure 7

Remove the air chamber and inspect
air chamber gaskets (2). Replace if
necessary.

Step 8. Figure 8

Remove the pilot spool from the
center section.

Step 9. Figure 9

With O-ring pick, gently remove the
O-ring from the opposite side of the
“center hole” cut on the spool. Gently
remove the pilot spool from sleeve and
inspect for nicks or gouges and other
signs of wear. Replace pilot sleeve
assembly or outer sleeve O-rings if
necessary. During reassembly never
insert the pilot spool into the sleeve
with the “center cut” side first, 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.

Step 10. Figure 10

Once the air chambers have been
removed, the square air valve nuts
(6) may be removed or replaced if
necessary.

WIL-11240-E-05 29 WILDEN PUMP & ENGINEERING, LLC

Step 11. Figure 11

Remove and inspect the shaft
bushings (2) replace if necessary.

Step 12. Figure 12

Inspect center block Glyd™ rings (2)
for wear. If replacement is necessary,
use an O-ring pick to remove the
used Glyd rings then replace with
genuine Wilden replacement parts.

Section 7D

REASSEMBLY HINTS & TIPS

ASS E M B LY:

Upon performing applicable maintenance to the air
distrib ution system, t he pump can now be re assembled .
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 first, then
the diaphragms and finally the wetted path. Please find
the applicable torque specifications on this page. 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 seals.

• A small amount of NLGI grade 2 white EP bearing

grease can be applied to the muffler and air valve
gaskets to locate gaskets during assembly.

• Make sure that the exhaust port on the muffler 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.

PRO-FLO® MAXIMUM TORQUE SPECIFICATIONS

Description of Part Torque

®

Pro-Flo

Air Valve Bolts 5.1 N•m (45 in-lb)

Air Chamber to Center Block 27.1 N•m (20 ft-lb)

Outer Piston 47.5 N•m (35 ft-lb)

Manifolds to Liquid Chamber 9.6 N•m (85 in-lb)

Liquid Chamber to Air Chamber 9.6 N•m (85 in-lb)

PRO-FLO X™ MAXIMUM TORQUE SPECIFICATIONS

Description of Part Torque

®

Pro-Flo

Air Valve Bolts 5.1 N•m (45 in-lb)

Air Chamber to Center Block 27.1 N•m (20 ft-lb)

Outer Piston 47.5 N•m (35 ft-lb)

Manifolds to Liquid Chamber 9.6 N•m (85 in-lb)

Liquid Chamber to Air Chamber 9.6 N•m (85 in-lb)

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 fingers 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.

• Af ter 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 finger. With either the side
of the screwdriver or your finger, 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 shaf t with NLGI grade 2
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 seal.

Figure A

SHA FT SE AL

TAPE

WILDEN PUMP & ENGINEERING, LLC 30 WIL-11240-E-05

Figure B

SHA FT SE AL

NEEDLE-NOSE

PLIERS

TAPE

NOTES

Section 8

EXPLODED VIEW AND PARTS LISTING

P400 PLASTIC

EXPLODED VIEW

PLASTIC ADS

FULL-STROKE PTFE FULL-STROKE IPD REDUCED-STROKE PTFE

LW0328 Rev. A

ALL CIRCLED PART IDENTIFIERS ARE INCLUDED IN REPAIR KITS (see section 9).

WILDEN PUMP & ENGINEERING, LLC 32 WIL-11240-E-05

EXPLODED VIEW AND PARTS LISTING

P400 PLASTIC

Item

Description Qty.

P400/PPPPP

P/N

AIR DISTRIBUTION COMPONENTS

1 Air Valve Assembly, Pro-Flo®
2 O-Ring, End Cap (-225, Ø1.859" x Ø.139") 2 04-2390-52-700 04-2390-52-700

3 End Cap 2 04-2330-20-700 04-2330-20-700
4 Screw, SHC, Air Valve (1/4"-20 x 4-1/2") 4 01-6000-03 01-6000-03
5 Screw, SHC, Air Valve (#10-16 x 1-3/4") 2 04-6351-03 04-6351-03
6 Nut, Square (1/4"-20) 4 00-6505-03 00-6505-03
7 Muffler Plate, Pro-Flo

8 Gasket, Muffler Plate, Pro-Flo
9 Gasket, Air Valve, Pro-Flo

10 Center Block Assembly, Pro-Flo
11 Sleeve, Threaded, Center Block 4 04-7710-08 04-7710-08

12 Removable Pilot Sleeve Assembly 1 04-3882-99 04-3882-99
13 Pilot Spool Retaining O-Ring (-009, Ø.204" x Ø.070") 2 04-2650-49-700 04-2650-49-700
14 Shaft Seal 2 08-3210-55-225 08-3210-55-225
15 Gasket, Center Block Pro-Flo

16 Air Chamber, Pro-Flo
17 Washer, Flat (Ø.406" x Ø.875" x .125") 8 04-6741-03 04-6741-03
18 Screw, HHC (3/8"-16 x 1-1/4") 8 04-6190-03 04-6190-03
19 Bushing Reducer 3/4" MNPT to 1/2" FNPT 1 04-6950-20-700 04-6950-20-700
20 Muffler 3/4" MNPT 1 04-3510-99 04-3510-99

1

®

®

®

® 2

®

®

1 04-2000-20-700 04-2000-20-700

1 04-3180-20-700 04-3180-20-700

1 04-3500-52-700 04-3500-52-700
1 04-2600-52-700 04-2600-52-700

1 04-3110-20 04-3110-20

2 04-3526-56 04-3526-56

2 04-3681-20 04-3681-20

WETTED PATH COMPONENTS

21 Chamber, Liquid 2 04-5005-20 04-5005-21
22 Washer, Plain (Ø.406" x Ø.812" x .065") 32 04-6740-03 04-6740-03
23 Screw, HHCS (3/8"-16 x 3-1/2") 16 04-6191-03 04-6191-03
24 Nut, Hex Flange (3/8"-16) 16 04-6435-03 04-6435-03
25 Screw, HHCS, (3/8"-16 x 1-3/4") 16 04-6181-03 04-6181-03
26 Manifold, Discharge (ANSI) 1 04-5030-20 04-5030-21

Manifold, Discharge (DIN) 1 04-5031-20 04-5031-21

27 Manifold, Inlet (ANSI) 1 04-5090-20 04-5090-21

Manifold, Inlet (DIN) 1 04-5091-20 04-5091-21

GASKETS/VALVE BALLS/VALVE SEATS/VALVE O-RINGS

28 Valve Ball 4
29 Valve Seat 4 04-1125-20 04-1125-21
30 Valve Seat O-Ring (-331, Ø2.225" x Ø.210") 4 *
31 Manifold O-Ring (-340, Ø3.350" x Ø.210") 4 *

* *

FULL-STROKE RUBBER/TPE/PTFE/FSIPD COMPONENTS

32 Shaft, Pro-Flo® Rubber Advanced 1 04-3811-03 04-3811-03
33 Shaft Stud (1/2"-20 x 1-7/8") 2 08-6150-08 08-6150-08
34 Piston, Inner, Full-Stroke Rubber/TPE/PTFE/FSIPD 2 04-3700-01-700 04-3700-01-700

35 Diaphragm, Primary 2 *

Diaphragm, Primary, Full-Stroke PTFE 2 04-1040-55 04-1040-55
Diaphragm, IPD Primary 2 *

36 Diaphragm, Backup, Full-Stroke PTFE 2 *

37 Piston, Outer, Full-Stroke Rubber/TPE/PTFE 2 04-4550-20-500 04-4550-21-500

REDUCED-STROKE PTFE COMPONENTS

32 Shaft, Pro-Flo
34 Piston, Inner, Reduced-Stroke PTFE 2 04-3752-01 04-3752-01

35 Diaphragm, Primary, Reduced-Stroke PTFE 2 04-1010-55 04-1010-55
36 Diaphragm, Backup, Reduced-Stroke PTFE 2 *

37 Piston, Outer, Reduced-Stroke PTFE 2 04-4600-20-500 04-4600-21-500

®

1 04-3842-03 04-3842-03

P400/KKPPP

P/N

*
*

*

*
*

*

LW0329 Rev. A

PARTS LISTING

1

Air Valve Assembly includes item

numbers 2 and 3.

2

Center Block Assembly includes

items 10 and 14.

BSP to NPT Air Line Reducer
Bushing (P/N 04-6950-23-702) is
available upon request.

0502 Specialty Code = PFA-Coated
Hardware

0504 Specialty Code = DIN Flange

*Refer to Elastomer Chart (see
Section 9).

All boldface items are primary
wear parts.

WIL-11240-E-05 33 WILDEN PUMP & ENGINEERING, LLC

EXPLODED VIEW AND PART LISTINGS

PX400 PLASTIC

EXPLODED VIEW

PLASTIC ADS

FULL-STROKE PTFE FULL-STROKE IPD

REDUCED-STROKE PTFE

LW0190 Rev. B

ALL CIRCLED PART IDENTIFIERS ARE INCLUDED IN REPAIR KITS (see section 9).

WILDEN PUMP & ENGINEERING, LLC 34 WIL-11240-E-05

EXPLODED VIEW AND PART LISTINGS

PX400 PLASTIC

Item

Description Qty.

PX400/PPPPP

P/N

AIR DISTRIBUTION COMPONENTS

1 Pro-Flo X™ Assembly, Air Valve
2 O-Ring (-225), End Cap (-225, Ø1.859" x Ø.139") 2 04-2390-52-700 04-2390-52-700

3 End Cap 2 04-2330-20-700 04-2330-20-700
4 Screw, SHC, Air Valve (1/4"-20 x 4-1/2") 6 01-6000-03 01-6000-03
5 Nut, Square (1/4"-20) 6 00-6505-03 00-6505-03
6 Muffler Plate, Pro-Flo X™ 1 08-3185-20 08-3185-20

7 Gasket, Muffler Plate, Pro-Flo X™ 1 08-3502-52 08-3502-52
8 Gasket, Air Valve, Pro-Flo X™ 1 08-2620-52 08-2620-52

9 Center Block Assembly, Pro-Flo X™

10 O-Ring, Adjuster (-210, Ø.734" x Ø.139") 1 02-3200-52 02-3200-52

11 Sleeve, Threaded, Center Block 4 04-7710-08 04-7710-08

12 O-Ring (-009) Pilot Spool Retaining (Ø.208" x Ø.070") 2 04-2650-49-700 04-2650-49-700
13 Removable Pilot Sleeve Assembly 1 04-3882-99 04-3882-99
14 Shaft Seal 2 08-3210-55-225 08-3210-55-225
15 Shaft Bushing 2 08-3306-13 08-3306-13
16 Gasket, Center Block Pro-Flo

17 Air Chamber, Pro-Flo
18 Washer, Plain (Ø.406" x Ø.875" x .125") 8 04-6741-03 04-6741-03
19 Screw, HHC (3/8"-16 x 1-1/4") 8 04-6190-03 04-6190-03
20 Retaining Ring 2 04-3890-03 04-3890-03
21 Muffler 1" MNPT 1 15-3514-99 15-3514-99

®

SHIFT 2 04-3689-20 04-3689-20

1

2

®

SHIFT 2 04-3529-56 04-3529-56

1 08-2030-20 08-2030-20

1 08-3126-20 08-3126-20

WETTED PATH COMPONENTS

22 Chamber, Liquid 2 04-5005-20 04-5005-21
23 Manifold, Discharge (ANSI) 1 04-5030-20 04-5030-21

Manifold, Discharge (DIN) 1 04-5031-20 04-5031-21

24 Manifold, Inlet (ANSI) 1 04-5090-20 04-5090-21

Manifold, Inlet (DIN) 1 04-5091-20 04-5091-21

25 Washer, Plain (Ø.406" x Ø.812" x .065") 32 04-6740-03 04-6740-03

Screw, HHCS (3/8"-16 x 3-1/2") 16 04-6191-03 04-6191-03

26

27 Nut, Hex Flange (3/8"-16) 16 04-6435-03 04-6435-03

Screw, HHCS, (3/8"-16 x 1-3/4") 16 04-6181-03 04-6181-03

28

GASKETS/VALVE BALLS/VALVE SEATS/VALVE O-RINGS

29 Valve Ball 4
30 Valve Seat 4 04-1125-20 04-1125-21
31 Valve Seat O-Ring (-331, Ø2.250" x Ø.210") 4 *
32 Manifold O-Ring (-340, Ø3.350" x Ø.210") 4 *

* *

FULL-STROKE RUBBER/TPE/PTFE/FSIPD COMPONENTS

33 Shaft, Pro-Flo® Rubber Advanced 1 04-3811-03 04-3811-03
34 Shaft Stud (1/2"-20 x 1-7/8") 2 08-6150-08 08-6150-08
35 Piston, Inner, Full-Stroke Rubber/TPE/PTFE/FSIPD 2 04-3700-01-700 04-3700-01-700

36 Diaphragm, Primary 2 *

Diaphragm, Primary, Full-Stroke PTFE 2 04-1040-55 04-1040-55
Diaphragm, Primary, IPD 2 *

37 Diaphragm, Backup, Full-Stroke PTFE 2 *

38 Piston, Outer, Full-Stroke Rubber/TPE/PTFE 2 04-4550-20-500 04-4550-21-500

REDUCED-STROKE PTFE COMPONENTS

33 Shaft, Pro-Flo® PTFE Advanced 1 04-3842-03 04-3842-03
35 Piston, Inner, Reduced-Stroke PTFE 2 04-3752-01 04-3752-01

36 Diaphragm, Primary, Reduced-Stroke PTFE 2 04-1010-55 04-1010-55
37 Diaphragm, Backup, Reduced-Stroke PTFE 2 *

38 Piston, Outer, Reduced-Stroke PTFE 2 04-4600-20-500 04-4600-21-500

PX400/KKPPP

P/N

*
*

*

*
*

*

LW0191 Rev. B

PARTS LISTING

1

Air Valve Assembly includes item

numbers 2 and 3.

2

Center Block Assembly includes

items 10, 11, 15 and 16.

BSP to NPT Air Line Reducer
Bushing (P/N 04-6950-23-702) is
available upon request.

0502 Specialty Code = PFA-Coated
Hardware

0504 Specialty Code = DIN Flange

*Refer to Elastomer Chart (see
Section 9).

All boldface items are primary
wear parts.

WIL-11240-E-05 35 WILDEN PUMP & ENGINEERING, LLC

Section 9

ELASTOMER OPTIONS

P400/PX400 Plastic

MATERIAL DIAPHRAGMS (2)

Polyurethane 04-1010-50 N/A N/A 04-1022-50 N/A N/A
Neoprene 04-1010-51 N/A N/A N/A N/A N/A
Buna-N 04-1010-52 N/A N/A N/A N/A N/A

®

Geolast
EPDM 04-1010-54 N/A N/A N/A N/A N/A

®

Viton
Saniflex™ 04-1010-56 N/A 04-1065-56 04-1022-56 N/A N/A
PTFE N/A 04-1040-55 N/A N/A N/A 04-1010-55
PTFE Encap. (Viton®) N/A N/A N/A N/A N/A N/A
FDA Wil-Flex™ 04-1010-57 N/A 04-1065-57 04-1022-57 04-1031-57 N/A
Wil-Flex™ 04-1010-58 N/A N/A 04-1022-58 N/A N/A
Polypropylene N/A N/A N/A N/A N/A N/A
PVDF N/A N/A N/A N/A N/A N/A

MATERIAL

Polyurethane N/A 04-1080-50 N/A N/A N/A
Neoprene 04-1060-51 04-1080-51 N/A N/A N/A
Buna-N N/A 04-1080-52 N/A 08-1300-52-500 04-1371-52

®

Geolast
EPDM 04-1060-54 04-1080-54 N/A N/A N/A

®

Viton
Saniflex™ 04-1060-56 04-1080-56 N/A N/A N/A
PTFE N/A 04-1080-55 N/A N/A N/A
PTFE Encap. (Viton®) N/A N/A N/A 08-1300-60-500 04-1371-60
FDA Wil-Flex™ N/A 04-1080-57 N/A N/A N/A
Wil-Flex™ N/A 04-1080-58 N/A 08-1300-58-500 04-1371-58
Polypropylene N/A N/A 04-1125-20 N/A N/A
PVDF N/A N/A 04-1125-21 N/A N/A

Backup diaphragms used with PTFE diaphragms only.

N/A N/A N/A 04-1022-15 N/A N/A

04-1010-53 N/A N/A N/A N/A N/A

REDUCED-STROKE

BACKUP

DIAPHRAGMS VALVE BALLS (4) VALVE SEATS (4 )

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

N/A 04-1080-53 N/A N/A N/A

FULL-STROKE

DIAPHRAGMS (2)

FULL-STROKE

BACKUP

DIAPHR AGMS (2)

EZ-INSTSALL

DIAPHRAGMS (2)

VALVE SEAT
O-RINGS ( 4)

FULL-STROKE IPD

DIAPHRAGMS (2)

MANIFOLD

O-RINGS ( 4)

LW0329 Rev. A

REDUCED-STROKE

DIAPHRAGMS (2)

WILDEN PUMP & ENGINEERING, LLC 36 WIL-11240-E-05

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 Purchased

YOUR INFORMATION

Company Name

Industry

Name Title

Street Address

City State Postal Code Country

Telephone Fax E-mail Web Address

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

Trade Journal

Trade Show

Internet/ E-mail

Distributor

ONCE COMPLETE, FAX TO [phone]

OR GO TO PSGDOVER.COM > WILDEN > SUPPORT TO COMPLETE THE WARRANTY REGISTRATION ONLINE

NOTE: WARRANTY VOID IF PAGE IS NOT FAXED TO WILDEN OR SUBMITTED ONLINE VIA THE PSGDOVER.COM WEBSITE

WILDEN PUMP & ENGINEERING, LLC

PSG

22069 Van Buren St., Grand Terrace, CA 92313-5607

P: [phone]

• F: [phone]

wildenpump.com

Where Innovation Flows

PSG® reserves the right to modify the information and illustrations contained in this document without prior notice. This is a non-contractual document. 08-2016

Authorized PSG Representative:

Copyrigh t ©2016, PS G®, A Dover Compa ny

REPLACES W IL-11240-E- 04

WI L-112 40 -E -0 5