Wilden PS8 Engineering, Operation & Maintenance

EOM

Engineering

Operation &

Maintenance

PS8

Original
Metal Pump

™

Series

Where Innovation Flows

www.wildenpump.com

REP LACES WIL-10410- E-04

WIL-10410- E-05

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

PS8 Rubber-Fitted .........................................................5

PS8 EZ-Install TPE-Fitted ...................................................5

PS8 Full-Stroke PTFE-Fitted .................................................6

Suction-Lift Curves ........................................................7

SECTION 6 SUGGESTED INSTALLATION, OPERATION & TROUBLESHOOTING ........8

SECTION 7 ASSEMBLY / DISASSEMBLY ...........................................11

Air Valve / Center Section Disassembly ......................................14

Reassembly Hints & Tips ..................................................18

SECTION 8 EXPLODED VIEW & PARTS LISTING

PS8 Metal ..............................................................20

PS8 Metal Saniflo™ 1935/2004/EC ..........................................22

SECTION 9 ELASTOMER OPTIONS .................................................24

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 redu ce pump perf ormance.
Pump is pre-lubed.

TEMPERATURE LIMITS:

Polypropylene 0°C to 79°C 32°F to 175°F
PVDF –12°C to 107°C 10°F to 225°F
PFA 7°C to 107°C 20°F to 225°F
Neoprene –18°C to 93°C 0°F to 200°F
Buna-N –12°C to 82°C 10°F to 180°F
EPDM –51°C to 138°C –60°F to 280°F
Viton

®

FKM –40°C to 177°C –40°F to 350°F
Wil-Flex™ –40°C to 107°C –40°F to 225°F
Saniflex™ –29°C to 104°C –20°F to 220°F
Polyurethane –12°C to 66°C 10°F to 150°F

Polytetrafluoroethylene (PTFE)1 4°C to 104°C 40°F to 220°F
Nylon –18°C to 93°C 0°F to 200°F
Acetal –29°C to 82°C –20°F to 180°F

SIPD PTFE

SIPD PTFE

with

Neoprene-backed

with

EPDM-backed –10°C to 137°C 14°F to 280°F

4°C to 104°C 40°F to 220°F

Polyethylene 0°C to 70°C 32°F to 158°F
Geolast

®

–40°C to 82°C –40°F to 180°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 (E4) for chemical compatibility

and temperature limits.

WARNING : Prevent 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: The process fluid and cleaning fluids

must be chemically compatible with all wetted
pump components (see E4).

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

temperature for Pro-Flo® SHIFT 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 PTFE diaphragms, it is

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

NOTE: Cast Iron PTFE-fitted 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:

Pro-Flo® pumps cannot be used in
submersible applications. Pro -Flo® SHIFT p umps do
have a single-point exhaust option for submersible
applications. Do not use standard Pro-Flo® SHIFT
models in submersible applications. Pro-Flo X™
and Turbo - Flo® pumps are also available in a
single-point exhaust (submersible) configuration.

WIL-10410 -E-0 5 1 WILDEN PUMP & ENGINEERING, LLC

CAUTION : Tighten all hardware prior to installation.

Section 2

WILDEN PUMP DESIGNATION SYSTEM

PS8 METAL

51 mm (2") Pump
Maximum Flow Rate:
723 lpm (191 gpm)

LEGEND

MATERIAL CODES

XPS8 / XXXXX / XXX / XX / XXX / XXXX

MODEL

VALVE BALLS

DIAPHRAGMS

AIR VALVE

CENTER BLOCK

AIR CHAMBERS

WETTED PARTS & OUTER PISTON

O-RINGS

VALVE SE AT

SPECIALT Y
CODE

(if applicable)

MODEL

XPS 8 = PRO-FLO® SHIFT AT EX

WETTED PARTS/OUTER PISTON

AA = ALUMINUM / ALUMINUM
SS = STAINLE SS S TEEL /
STAINLESS STEEL
WW

= CAST IRON / CAS T IRON

SZ = STAINLESS STEEL / NO

OUTER PISTON

AIR CHAMBERS

A = ALUMINUM
N = NICKEL-PLATED
S = STAINLESS STEEL

CENTER BLOCK

A = ALUMINUM
N = NICKEL-PLATED

AIR VALVE

A = ALUMINUM
N = NICKEL-PLATED
R = ANODIZED ALUMINUM

NOTE:

1

Meets Requirements of FDA CFR21.177

2

Meets Requirements of USP Class VI

3

Meets Requirements of 1935/2004/EC

DIAPHRAGMS

BNS = BUNA-N (Red Dot)
EPS = EPDM (Blue Dot)
FBS = SANITARY BUNA

(Two Yellow Dots)

FES = SANITARY EPDM

1,3

1,3

(Two Blue Dots)
FWL = SANITARY WIL-FLEX™ IPD
FWS = SANITARY WIL-FLEXTM,
EZ-INSTALL

1,3

[Santoprene®
(Two Orange Dots)]
NES = NEOPRENE (Green Dot)
TSS = FULL-STROKE PTFE
W/SANIFLEX™ BACK-UP
TWS = FULL-STROKE PTFE

1,2,3

1,2,3

W/WIL-FLEX™ BACK-UP
VTS = VITON® (White Dot)
XBS = CONDUCTIVE BUNA-N
(Two Red Dots)
WFS = WIL-FLEX™ SANTOPRENE

(Orange Dot)
ZGS = GEOLAST®, EZ-INSTALL
ZPS = POLYURETHANE, EZ-INSTALL
ZSS = SANIFLEX™, EZ-INSTALL

1,3

ZWS = WIL-FLEX™, EZ-INSTALL

VALVE BALLS

BN = BUNA-N (Red Dot)
EP = EPDM (Blue Dot)
FB = SANITARY BUNA

Yellow Dots)
FE = SANITARY EPDM

1,3

(Two

1,3

(Two Blue

Dots)

FS = SANIFLEX™

[Hytrel® (Cream)]
FW = SANITARY WIL-FLEX
[Santoprene® (Two Orange

Dots)]
NE = NEOPRENE (Green Dot)
PU = POLYURETHANE (Brown)
TF = PTFE (White)

1,3

VT = VITON® (Silver or White Dot)

1,2,3

WF = WIL-FLEX™ [Santoprene®

(Orange Dot)]

VALVE SEAT

A = ALUMINUM
BN = BUNA-N (Red Dot)
EP = EPDM (Blue Dot)
FS = SANIFLEX™ [Hytrel

(Cream)]

1,3

FW = SANITARY WIL-FLEX
[Santoprene®
(Two Orange Dots)]
H = ALLOY C
M = MILD STEEL
NE = NEOPRENE (Green Dot)
PU = POLYURETHANE (Brown)
S = STAINLESS STEEL
VT = VITON® (White Dot)
WF = WIL-FLEX™ [Santoprene®

(Orange Dot)]

VALVE SEAT O-RING

TF = PTFE

1,2,3

1,3

TM 1,3

®

TM 1,3

SPECIALTY CODES

0014 BSP
0023

Wing nuts
Screen based

0030
0036

Screen based, BSP
Screen based, polyurethane screen

0039
0044

Stallion, balls & seats ONL

0047

Stallion externals, balls and seats

TM

Saniflo

0070
0075
0079 Tri-clamp fittings, wing nuts
0080 Tri-clamp fittings ONLY

FDA

TM

Saniflo

FDA, Stallion balls and seats ONLY

Y

NOTE: Most elastomeric materials use colored dots for identification.
NOTE: Not all models are available with all material options.

Viton® is a registered trademark of DuPont Dow Elastomers.

WILDEN PUMP & ENGINEERING, LLC 2 WIL-10410 -E-0 5

0100 Wil-Gard 110V
0102
0103
0108
0118
0120
0320
0324
0327
0330
0480

0070E

Saniflo™ FDA (1935/2004/EC)
Wil-Gard, sensor wires ONL
Wil-Gard 220V
Wil-Gard 220V
Stallion balls and seats ONL
Saniflo™ FDA, Wil-Gard 110V
Single-Point Exhaust center block
Single-Point Exhaust center block, screen base

Single-Point Exhaust center block, Stallion externals, balls & seats

Wing nuts, BSP
Pump Cycle Monitor (Sensor & Wires)

, BSP

Y

Y, BSP

0075E

Saniflo™ FDA Stallion balls & seats (1935/2004/EC)
Saniflo™ FDA, Wil-Gard 110V (1935/2004/EC)

0120E

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.

CLOSED

OUTLET

OPEN

B A

INLET

FIGUR E 1 The air valve dire cts pres surized
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 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).

CLOSEDOPEN

OPEN

OUTLET

CLOSED

B A

CLOSED OPEN

FIGURE 2
phragm

, diaphragm A, reaches the limit
of its discharge 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.

INLET

When the pressurized dia-

CLOSED OPEN

OUTLET

B A

OPEN

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 star ting
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.

INLET

CLOSED

HOW IT WORKS—AIR DISTRIBUTION SYSTEM

WIL-10410 -E-0 5 3 WILDEN PUMP & ENGINEERING, LLC

The heart of the patented Pro-Flo
System (ADS) is the air valve assembly. The air valve design
incorporates an unbalanced spool with the small end of the
spool being pressurized continuously while the large end of
the spool is alternately pressurized, then exhausted to move
the spool. The air valve spool directs pressurized air to one
chamber while exhausting the other. The air forces the main
shaft/diaphragm assembly to move to one side – discharging
liquid on that side and pulling liquid in on the other side. When
the shaft reaches the end of the stroke, the inner piston actuates
the pilot spool, which controls the air to the large end of the air
valve spool. The repositioning of the air valve spool routes the
air to the other air chamber. The air control spool allows air to
flow freely into the air chamber for the majority of each pump
stroke, but it significantly restricts the flow of air into the air
chamber when activated by the inner piston near the end of the
each stroke.

®

SHIFT Air Distribution

Section 4

DIMENSIONAL DRAWINGS

PS8 Metal

DIMENSIONS

ITEM METRIC (mm) STANDARD (inch)

A 404 15.9
B 45 1.8
C 363 14.3
D 630 24.8
E 668 26.3

F 58 2.3
G 64 2.5
H 346 13.6
J 48 1.9
K 339 13.3

L 659 26

M 315 12.4
N 257 10.1

P 231 9.1
R 257 10.1
S 15 0.6
T 64 2.5
U 51 2.0
V 284 11.2

W 58 2.3

X 279 11
Y 396 15.6
Z 15 DIA. 0.6 DIA.

LW0022 REV. A

PS8 Metal Saniflo

TM

DIMENSIONS

ITEM METRIC (mm) STANDARD (inch)

A 409 16.1
B 64 2.5
C 359 14.1
D 625 24.6
E 665 26.2

F 76 3.0
G 346 13.6
H 48 1.9
J 339 13.3
K 659 26

L 305 12

M 254 10
N 229 9.0

P 254 10
R 15 DIA. 0.6 DIA.

LW0023 REV. A

WILDEN PUMP & ENGINEERING, LLC 4 WIL-10410 -E-0 5

Section 5

PERFORMANCE

PS8 METAL

RUBBER-FITTED

Height .................................668 mm (26.3”)

Width ..................................404 mm (15.9”)

Depth ..................................338 mm (13.3”)

Ship Weight .............

Cast Iron 49 kg (109 lbs)
Alloy C 54 kg (119 lbs)

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

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

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

Suction Lift ........................7.2 m Dry (23.8’)

9.0 m Wet (29.5’)

Disp. per Stroke ................. 2.6 L (0.69 gal)

Max. Flow Rate ............ 700 lpm (185 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 329 lpm (87 gpm)
against a discharge head of 2.1 bar (30
psig) requires 4.1 bar (60 psig) and 75
Nm3/h (44 scfm) air consumption.

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

316 Stainless Steel 53 kg (117 lbs)

Aluminum 35 kg (78 lbs)

1

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.

PS8 METAL

EZ-INSTALL TPE-FITTED

Height .................................668 mm (26.3”)

Width ..................................404 mm (15.9”)

Depth ..................................338 mm (13.3”)

Ship Weight .............

Cast Iron 49 kg (109 lbs)
Alloy C 54 kg (119 lbs)

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

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

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

Suction Lift ....................... 6.9 m Dry (22.7’)

9.0 m Wet (29.5’)

Disp. per Stroke ................. 2.6 L (0.69 gal)

Max. Flow Rate .............719 lpm (190 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 363 lpm (96 gpm)
against a discharge head of 2.8 bar (40
psig) requires 5.5 bar (80 psig) and 102
Nm3/h (60 scfm) air consumption.

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

316 Stainless Steel 53 kg (117 lbs)

Aluminum 35 kg (78 lbs)

1

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-10410 -E-0 5 5 WILDEN PUMP & ENGINEERING, LLC

PERFORMANCE

PS8 METAL

FULL-STROKE PTFE-FITTED

Height .................................668 mm (26.3”)

Width ..................................404 mm (15.9”)

Depth ..................................338 mm (13.3”)

Ship Weight .............

Cast Iron 49 kg (109 lbs)
Alloy C 54 kg (119 lbs)

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

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

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

Suction Lift ....................... 6.3 m Dry (20.7’)

8.6 m Wet (28.4’)

Disp. per Stroke ................. 2.4 L (0.64 gal)

Max. Flow Rate ............ 723 lpm (191 gpm)

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

1

4.8 bar (70 psig) air inlet pressure against a

2.1 bar (30 psig) head pressure.

Example: To pump 341 lpm (90 gpm)
against a discharge head of 2.8 bar (40
psig) requires 5.5 bar (80 psig) and 104
Nm3/h (61 scfm) air consumption.

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

316 Stainless Steel 53 kg (117 lbs)

Displacement per stroke was calculated at

Aluminum 35 kg (78 lbs)

1

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-10410 -E-0 5

SUCTION-LIFT CURVES

PS8 METAL
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.

WIL-10410 -E-0 5 7 WILDEN PUMP & ENGINEERING, LLC

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 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. 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
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
can be used for submersible applications, when using the

®

Pro-Flo
and Turbo-Flo

SHIFT's single-point exhaust option. Pro-Flo X™

®

Pumps are also available in a single-point

SHIFT pumps

exhaust (submersible) configuration.

®

NOTE: Pro-Flo

and Accu-Flo™ pumps do not have a single-

point exhaust option and are not submersible.

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.

WILDEN PUMP & ENGINEERING, LLC 8 WIL-10410 -E-0 5

FOOTPAD

DISCHARGE

SUGGESTED INSTALLATION

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

MUFFLER

FLEXIBLE

CONNECTION

SUCTION

EQUALIZER

SURGE DAMPENER

(OPTIONAL)

GAUGE
(OPTIONAL)

SHUT-OFF
VALVE

FLEXIBLE
CONNECTION

COMBINATION

FILTER & REGULATOR

AIR SHUT-OFF VALVE

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-of f 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-off
valve should be located far enough away from the
pumping equipment such that it can be reached safely
in an emergency situation.

WIL-10410 -E-0 5 9 WILDEN PUMP & ENGINEERING, LLC

SUGGESTED OPERATION & MAINTENANCE

OPERATION: The Pro-Flo® SHIFT pumps are pre­lubricated 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 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

and can be restarted by reducing the fluid discharge
pressure or increasing the air inlet pressure. Wilden
Pro-Flo® SHIFT 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 identif y
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 filter for debris (see SUGGESTED
INSTALLATION).

3. Check for extreme air leakage (blow by) which
would indicate worn seals/bores in the air valve,
pilot spool and 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 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 which will cause the
air valve spool to be unable to shift.

7. Remove plug from pilot spool exhaust.

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.

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.

2. Verify that vacuum required to lift liquid is not

WILDEN PUMP & ENGINEERING, LLC 10 WIL-10410 -E-0 5

Product comes out air exhaust.

1. Check for diaphragm rupture.

2. Check tightness of outer pistons to shaft.

Section 7

PUMP DISASSEMBLY

Tools Required:

• Appropriate-sized
Wrench

• Adjustable Wrench

• Vise equipped w /
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 is an aluminum PS4 38 mm (1-1/2”) pump. Your
specific pump model may vary from configuration shown.

Step 1

Before starting disassembly, mark
a line from each liquid chamber to
its corresponding air chamber. This
line will assist in proper alignment
during reassembly.

WIL-10410 -E-0 5 11 WILDEN PUMP & ENGINEERING, LLC

Step 2

Using an appropriate-sized wrench,
remove the two (2) small clamp
bands that fasten the discharge
manifold to the liquid chambers.

Step 3

Lift the discharge manifold to
expose discharge valve balls and
valve seats. Inspect ball cage area
of manifold for excessive wear or
damage.

PUMP DISASSEMBLY

Step 4

Remove the discharge valve
balls and valve seats from the
liquid chambers and inspect for
nicks, chemical attack or abrasive
wear. Replace worn parts with
genuine Wilden parts for reliable
performance.

Step 5

Using an appropriate-sized wrench,
remove the two (2) small clamp
bands that fasten the inlet manifold
to the liquid chambers.

Step 6

Lift the liquid chambers and center
section assembly from the inlet
manifold to expose the inlet valve
balls and valve seats. Inspect ball
cage area of inlet manifold for
excessive wear or damage.

Step 7

Remove the inlet valve balls and
valve seats from the inlet manifold
and inspect for nicks, chemical
attack or abrasive wear. Replace
worn parts with genuine Wilden
parts for reliable performance.

WILDEN PUMP & ENGINEERING, LLC 12 WIL-10410 -E-0 5

Step 8

Using an appropriate-sized wrench,
remove one set of large clamp bands
that secure one liquid chamber to
the center section.

Step 9

Pull liquid chamber away from the
center section to expose diaphragm
and outer piston. Remove other
side of the liquid chamber from
center section.

PUMP DISASSEMBLY

Step 10

Using two adjustable wrenches,
turn the outer diaphragm pistons
in a counter-clockwise direction to
remove the diaphragm assembly
from center block. Inspect
diaphragm assembly and shaft
for signs of wear or chemical
attack. Replace all worn parts with
genuine Wilden parts for reliable
performance.

Step 11

Inspect the diaphragm assembly for
wear, damage or chemical attack.
Replace any damaged components
with genuine Wilden parts for
reliable performance.

Step 12

To remove diaphragm assembly
from shaft, secure shaft with
soft jaws (aluminum, plastic or
plywood) to ensure the shaft is
not damaged. Using an adjustable
wrench, remove the diaphragm
assembly from the shaft.

Step 13

Remove outer piston and stud if
equipped. Inspect for wear and
replace if necessary.

WIL-10410 -E-0 5 13 WILDEN PUMP & ENGINEERING, LLC

AIR VALVE / CENTER SECTION DISASSEMBLY

Tools Required:

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

®

The Wilden Pro-Flo
distribution system. Proprietary composite seals reduce the co efficient of friction
and allow the Pro-Flo® SHIFT to run lube-free. Constructed of aluminum, the Pro­Flo® SHIFT air distribution system is designed to perform in on/off, non-freezing,
non-stalling, tough duty applications.

SHIFT metal pumps utilize a revolutionary Pro-Flo® SHIFT air

Step 1

Using a pair of snap ring pliers,
remove the snap ring from pilot
sleeve.

WILDEN PUMP & ENGINEERING, LLC 14 WIL-10410 -E-0 5

Step 2

Using an O-ring pick, remove O-ring
from modulator spool.

Step 3

Using the appropriate-sized wrench,
loosen and remove the fasteners
that attach the air chamber to center
section.

AIR VALVE / CENTER SECTION DISASSEMBLY

Step 4

Lift away air chamber from center
section and remove center block
gasket. Replace gasket if necessary.

Step 5

Turn assembly over and remove the
pilot spool sleeve from the center
section.

Step 6

Using an O-ring pick, gently remove
the O-ring from the opposite side of
the dimpled end of the pilot spool.

Step 7

Gently remove the pilot spool from
the sleeve and inspect for nicks,
wear or damage. Replace the pilot
spool assembly or sleeve O-rings
if necessary. During reassembly,
never insert the dimpled end of the
pilot spool first, this will damage the
single urethane O-ring by passing it
over the ports in the pilot sleeve.

NOTE: Seals should not be removed
from the assembly. Seals are not
sold separately.

WIL-10410 -E-0 5 15 WILDEN PUMP & ENGINEERING, LLC

Step 8

Remove modulator spool from
center section. Check for wear to
spool or O-rings and replace if
necessary.

Step 9

Using the appropriate-sized wrench,
loosen the fasteners to remove
remaining air chamber and center
block gasket from center section.
Replace gasket if necessary.

AIR VALVE / CENTER SECTION DISASSEMBLY

Step 10

Using an O-ring pick, remove
the two (2) shaft bushings from
center block. Inspect and replace
if necessary. Using an O-ring pick,
gently remove the two (2) Glyd™
rings from the center block. Inspect
and replace if necessary.

Step 11

Using an O-ring pick, remove the
two (2) Glyd™ rings from modulator
spool bore. Inspect and replace if
necessary.

Step 12

Using an appropriate-sized wrench,
remove the pilot exhaust muffler.
Inspect for damage or contamination
and replace if necessary.

Step 13

Using an appropriate-sized hex
wrench, loosen and remove the
four (4) air valve bolts from center
section assembly.

WILDEN PUMP & ENGINEERING, LLC 16 WIL-10410 -E-0 5

Step 14

Lift away muffler plate and muffler plate gasket from center block. Inspect
for wear and replace if necessary. Lift away the air valve assembly and
remove air valve gasket. Inspect the gasket and replace if necessary.

AIR VALVE / CENTER SECTION DISASSEMBLY

Step 15

Remove air valve end cap to expose
air valve spool by lifting up on end
cap. Inspect O-ring on end cap using
an O-ring pick. Replace O-ring(s)
if necessary. NOTE: The Pro-Flo
SHIFT air valve incorporates an end
cap at both ends of the air valve.

Step 16

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 the entire
air valve assembly if necessary. Re-insert the spool immediately into air

®

valve body after inspection as the seals expand and cannot be reinserted
after a length of time.

NOTE: Seals should not be removed from the assembly. Seals are not sold
separately.

SINGLE-POINT EXHAUST PRO-FLO® SHIFT

Step 1

Remove pilot exhaust muffler in
pilot bleed port located at the front
of the center block. Install 1/4" NPT
pipe plug (00-7010-08) into bleed
port.

WIL-10410 -E-0 5 17 WILDEN PUMP & ENGINEERING, LLC

Standard Single-Point Exhaust

Step 2

Next, install an optional single-point exhaust gasket
(04-2628-52). The single-point air valve gasket can
be purchased as a spare part or included with the

®

purchase of a new Pro-Flo

SHIFT pump.

REASSEMBLY HINTS & TIPS

AS SE 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 shaft 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® SHIFT MAXIMUM TORQUE SPECIFICATIONS

Description of Part Torque

Air Valve

Air Chamber/Center Block

Outer Pis tons, Rubber & PTFE, E xcluding Stainles s Steel Inner Pistons

Outer Pis tons, Rubber & PTFE, St ainless Steel Inner Pi stons

Small Clamp Bands

Large Clamp Bands (Rubber-fitted)

Large Clamp Bands (PTFE-fitted)

Figure A

SHA FT SE AL

13.6 N•m (120 in-lb)

27.1 N•m (20 ft-lb)

108 N•m (80 ft-lb)

119 N•m (88 ft-lb)

6.6 N•m (58 in-lb)

47.5 N•m (35 ft-lb)

47.5 N•m (35 ft-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 with greater ease.

• 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 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 shaft with NLGI grade 2
white EP bearing

• 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 B

grease.

NEEDLE NOSE

PLIERS

TAPE

WILDEN PUMP & ENGINEERING, LLC 18 WIL-10410 -E-0 5

SHA FT SE AL

TAPE

NOTES

Section 8

EXPLODED VIEW & PARTS LISTING

PS8 METAL

EXPLODED VIEW

ALL CIRCLED PART IDENTIFIERS ARE INCLUDED IN REPAIR KITS

FULL-FLOW PTFE

LWOO27 REV. B

WILDEN PUMP & ENGINEERING, LLC 20 WIL-10410-E-05

EXPLODED VIEW & PARTS LISTING

PS8 METAL

Item

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

3 End Cap 2 04-2340-01 04-2340-01 04-2340-01 04-2340-01
4 Screw, SHC, Air Valve (1/4”-20 x 4-1/2”) 4 01-6000-03 01-6000-03 01-6000-03 01-6000-03
5 Muffler Plate, Pro-Flo

6 Gasket, Muffler Plate, Pro-Flo
7 Gasket, Air Valve, Pro-Flo® SHIFT 1 04-2629-52 04-2629-52 04-2629-52 04-2629-52

8 Center Block Assembly, Pro-Flo

9 Pilot Sleeve Assembly 1 04-3880-99 04-3880-99 04-3880-99 04-3880-99
10 O-Ring (-009), Pilot Spool Retaining (Ø.208” x Ø.070”) 2 04-2650-49-700 04-2650-49-700 04-2650-49-700 04-2650-49-700
11 Seal, Shaft 2 08-3210-55-225 08-3210-55-225 08-3210-55-225 08-3210-55-225
12 Bushing, Shaft 2 08-3306-13 08-3306-13 08-3306-13 08-3306-13
13 Gasket, Center Block Pro-Flo V™ 2 04-3529-52 04-3529-52 04-3529-52 04-3529-52
14 Seal, Air Control Spool 2 02-3210-55-225 02-3210-55-225 02-3210-55-225 02-3210-55-225
15 Air Control Spool 1 04-3859-03 04-3859-03 04-3859-03 04-3859-03
16 O-ring, (-114) Air Control Spool Retaining (Ø.612” x Ø.103”) 2 04-3879-50 04-3879-50 04-3879-50 04-3879-50

17 Air Chamber, Pro-Flo V™ 2 08-3660-01 08-3660-01 08-3660-01 08-3660-01
18 Screw, HSFHS (3/8”-16 x 1”) 8 71-6250-08 71-6250-08 71-6250-08 71-6250-08
19 Retaining Ring 2 04-3890-03 04-3890-03 04-3890-03 04-3890-03
20 Grounding Screw, (10-32 x .50”) Self Tapping 1 04-6345-08 04-6345-08 04-6345-08 04-6345-08
21 Muffler 1-1/2” NPT 1 04-3518-99R 04-3518-99R 04-3518-99R 04-3518-99R
22 Muffler 1/4” NPT 1 04-3240-07 04-3240-07 04-3240-07 04-3240-07

Description Qty.

1

®

SHIFT 1 04-3189-01 04-3189-01 04-3189-01 04-3189-01

®

SHIFT 1 04-3509-52 04-3509-52 04-3509-52 04-3509-52

®

2

SHIFT

AIR DISTRIBUTION COMPONENTS

XPS8/AAAAA/

P/N

1 04-2039-01 04-2039-01 04-2039-01 04-2039-01

1 04-3129-01 04-3129-01 04-3129-01 04-3129-01

XPS8/WWAAA/

P/N

PARTS LISTING

XPS8/SSAAA/

P/N

XPS8/SSAAA/…/0070

P/N

WETTED PATH COMPONENTS

23 Liquid Chamber 2 08-5000-01 08-5000-02 08-5000-03 08-5000-03P
24 Manifold, Discharge NPT 1 08-5020-01 08-5020-02 08-5020-03 N/A

Manifold, Discharge BSPT 1 08-5020-01-14 08-5020-02-14 08-5020-03-14 N/A
Manifold, Discharge Tri-Clamp 1 N/A N/A N/A 08-5020-03-70P

25 Manifold, Footed Inlet NPT 1 08-5080-01 08-5080-02 08-5080-03 N/A

Manifold, Footed Inlet BSPT 1 08-5080-01-14 08-5080-02-14 08-5080-03-14 N/A

Manifold, Footed Inlet Tri-Clamp 1 N/A N/A N/A 08-5080-03-70P
26 Large Clamp Band Assembly 2 08-7300-08 08-7300-08 08-7300-03 08-7300-03
27 Screw, HHC Large (3/8”-16 x 3”) 4 08-6120-08 08-6120-08 08-6120-03 08-6120-03
28 Large Hex Nut (3/8”-16) 4 08-6450-08 08-6450-08 08-6450-03 08-6671-10
29 Washer, Brass Flat (Ø.392” x Ø.875” x .063”) (not shown) 4 N/A N/A N/A 08-6720-07-70
30 Small Clamp Band Assembly 4 08-7100-08 08-7100-08 08-7100-03 08-7100-08
31 Screw, HHC Small (5/16”-18 x 1-1/2”) 8 08-6050-08 08-6050-08 08-6050-03 08-6050-03
32 Small Hex Nut (5/16”-18) 8 04-6420-08 04-6420-08 04-6400-03 08-6661-10
33 Washer, Brass Flat (Ø.340” x Ø.750” x .063”) (not shown) 8 N/A N/A N/A 08-6700-07-70

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

34 Ball, Valve 4 * * * *
35 Seat, Valve 4 * * * 08-1121-03P
36 O-Ring, (-334) Valve Seat, PTFE Fitted (Ø2.600 x Ø.210) 4 08-1200-55 08-1200-55 08-1200-55 08-1200-55

FULL STROKE RUBBER/TPE/PTFE COMPONENTS

37 Shaft (Rubber) 1 08-3810-09 08-3810-09 08-3810-09 08-3810-09

Shaft (EZ TPE/PTFE) 1 08-3812-03 08-3812-03 08-3812-03 08-3812-03
38 Piston, Inner 2 08-3700-01 08-3700-01 08-3700-01 08-3700-01

39 Diaphragm, Primary 2 * * * *
40 Diaphragm, Back-Up 2 * * * *

41 Piston, Outer 2 08-4550-01 08-4550-02 08-4550-03 08-4550-03P

*See elastomer chart - Section 9.

1

Air Valve Assembly includes items 2 and 3.

2

Metal Center Block Assembly includes items 11, 12, 14, 15 and 16.

All boldface items are primary wear parts.

WIL-10410 -E-0 5 21 WILDEN PUMP & ENGINEERING, LLC

LW0043 Rev. D

EXPLODED VIEW & PARTS LISTING

PS8 METAL SANIFLO™

1935/2004/EC EXPLODED VIEW

ALL CIRCLED PART IDENTIFIERS ARE INCLUDED IN REPAIR KITS

FULL-FLOW PTFE

LWOO91 REV. A

WILDEN PUMP & ENGINEERING, LLC 22 WIL-10410-E-0 5

EXPLODED VIEW & PARTS LISTING

PS8 METAL SANIFLO™

Item

Description Qty.

1935/2004/EC PARTS LISTING

XPS8/SSAAA

1935/2004/EC

P/N

AIR DISTRIBUTION COMPONENTS

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

3 End Cap 2 04-2340-01
4 Screw, SHC, Air Valve (1/4”-20 x 4-1/2”) 4 01-6000-03
5 Muffler Plate, Pro-Flo SHIFT™ 1 04-3189-01

6 Gasket, Muffler Plate, Pro-Flo SHIFT™ 1 04-3509-52
7 Gasket, Air Valve, Pro-Flo SHIFT™ 1 04-2629-52

8 Center Block Assembly, Pro-Flo SHIFT™

9 Pilot Sleeve Assembly 1 04-3880-99
10 O-Ring (-009), Pilot Spool Retaining (Ø.208” x Ø.070”) 2 04-2650-49-700
11 Seal, Shaft 2 08-3210-55-225
12 Bushing, Shaft 2 08-3306-13
13 Gasket, Center Block Pro-Flo V™ 2 04-3529-52
14 Seal, Air Control Spool 2 02-3210-55-225
15 Air Control Spool 1 04-3859-03
16 O-ring, (-114) Air Control Spool Retaining (Ø.612” x Ø.103”) 2 04-3879-50

17 Air Chamber, Pro-Flo V™ 2 08-3660-01
18 Screw, HSFHS (3/8”-16 x 1”) 8 71-6250-08
19 Retaining Ring 2 04-3890-03
20 Grounding Screw, (10-32 x .50”) Self Tapping 1 04-6345-08
21 Muffler 1-1/2” NPT 1 04-3518-99R
22 Muffler 1/4” NPT 1 04-3240-07

1

2

1 04-2039-01

1 04-3129-01

WETTED PATH COMPONENTS

23 Liquid Chamber 2 08-5000-03P
24 Manifold, Discharge Tri-Clamp 1 08-5020-03-70P
25 Manifold, Footed Inlet Tri-Clamp 1 08-5080-03-70P
26 Large Clamp Band Assembly 2 08-7300-03-70
27 Screw, HHC Large (3/8”-16 x 3”) 4 08-6120-03
28 Wing Nut, Large Clamp Band (3/8”-16) 4 08-6671-10
29 Washer, Brass Flat (Ø.392” x Ø.875” x .063”) 4 08-6720-07-70
30 Small Clamp Band Assembly 4 08-7100-03-70
31 RHSN Bolt, Small Clamp Band (5/16”-18 x 1-1/2”) 8 08-6050-03
32 Wing Nut, Small Clamp Band (5/16”-18) 8 08-6661-10
33 Washer, Brass Flat (Ø.340” x Ø.750” x .063”) 8 08-6700-07-70

VALVE BALLS/VALVE SEATS/VALVE O-RINGS

34 Ball, Valve, Pkg 4 1 *
35 Seat, Valve, Pkg 4 1 *

Seat, Valve, Stainless Steel 4 08-1121-03E

36 O-Ring, (-334) Valve Seat, PTFE Fitted (Ø2.600 x Ø.210), Pkg 4 1 08-1200-55E

FULL STROKE RUBBER/TPE/PTFE COMPONENTS

37 Shaft (Rubber) 1 08-3810-09

Shaft (EZ TPE/PTFE) 1 08-3812-03

38 Piston, Inner 2 08-3700-01

39 Diaphragm, Primary, Pkg 2 1 *
40 Diaphragm, Back-Up, Pkg 2 1 *

41 Piston, Outer 2 08-4550-03P

*See elastomer chart - Section 9.

1

Air Valve Assembly includes items 2 and 3.

2

Metal Center Block Assembly includes items 11, 12, 14, 15 and 16.

All boldface items are primary wear parts.

LW0080 Rev. B

WIL-10410 -E-0 5 23 WILDEN PUMP & ENGINEERING, LLC

Section 9

ELASTOMER OPTIONS

PS8 Metal

BACK-UP

MATERIAL DIAPHRAGM (2)

FULL STROKE (2) VALVE BALLS (4) VALVE SEATS (4)

Polyurethane 08-1022-50 N/A 08-1080-50 08-1120-50 N/A
Neoprene 08-1010-51 N/A 08-1080-51 08-1120-51 N/A
Buna-N 08-1010-52 N/A 08-1080-52 08-1120-52 N/A

DIAPHRAGMS

FDA Buna-N

2

08-1010-69 N/A N/A N/A N/A
Conductive Buna-N 08-1010-86 N/A N/A N/A N/A
Geolast

®

08-1022-15 N/A N/A N/A N/A
EPDM 08-1010-54 N/A 08-1080-54 08-1120-54 N/A
FDA EPDM
Viton
Full Stroke PTFE
Saniflex™
FDA Wil-Flex™

2

®

2

2

2

08-1010-74 N/A N/A N/A N/A

08-1010-53 N/A 08-1080-53 08-1120-53 N/A

08-1040-55 N/A 08-1080-55 N/A 08-1200-55

08-1022-56 08-1065-56 08-1080-56 08-1120-56 N/A

08-1022-57 08-1065-57 08-1080-57 08-1120-57 N/A
Wil-Flex™ 08-1022-58 N/A 08-1080-58 08-1120-58 N/A
Aluminum N/A N/A N/A 08-1121-01 N/A
Stainless Steel N/A N/A N/A 08-1121-03 N/A
Alloy C N/A N/A N/A 08-1121-04 N/A
Mild Steel N/A N/A N/A 08-1121-08 N/A

1

Used in conjunction with metallic valve seat.

2

Elastomer option for use in Saniflo™ FDA pumps (Specialty Code 0070).

VALVE SEAT

O-RING (4)

1

LW0043 Rev. D

PS8 Metal Saniflo™ 1935/2004/EC

FULL-STROKE

MATERIAL DIAPHRAGM (2)

FDA Buna-N

®

08-1010-69E N/A N/A N/A
FDA EPDM 08-1010-74E N/A N/A N/A
Full-Stroke PTFE 08-1040-55E N/A 08-1080-55E N/A
Saniflex™ 08-1022-56E 08-1065-56E 08-1080-56E 08-1120-56E
FDA Wil-Flex™ 08-1022-57E 08-1065-57E 08-1080-57E 08-1120-57E
Full-Stroke FDA Wil-Flex™ 08-1080-57 N/A N/A N/A

BACK-UP

DIAPHRAGMS (2) VALVE BALLS (4) VALVE SEATS (4)

LW0080 Rev. B

WILDEN PUMP & ENGINEERING, LLC 24 WIL-10410- E- 05

DECLARATION OF COMPLIANCE

STATEMENT OF COMPLIANCE TO REGULATIONS (EC) No 1935/2004

ON MATERIALS AND ARTICLES INTENDED TO COME INTO CONTACT WITH FOOD

Wilden® Pump & Engineering, LLC, 22069 Van Buren Street, Grand Terrace, CA 92313-5607 USA, declares

the equipment listed below intended to come into contact with food comply with the requirements of Regulation
(EC) No 1935/2004 of 27

 Saniflo™ HS Models:

(PX,XPX)(2,4,8,15)/(SS,SZ)(SSS,NNN)/(BNU,EPU,FBS,FES,FSS,FWL,FWS,LEL,TEU,TSS,TSU,TWS,ZSS)/
(FB,FE,FS,FV,FW,SF,TF,TM)/(FB,FE,FV,TF)/(0770-0789)E

 13 mm (½”) FDA Pro-Flo® & Pro-Flo X™ Models:

(P,PX,XPX)1/(SS,SZ)(AAA,GGG,JJJ,LLL,PPP)/(FSS,TEU,TSU)/(FS,TF)/S(FS,TF)/(0067,0070,0120)E

 25 mm (1”) FDA Pro-Flo® Models:

P2/(SS,SZ)(LLL,PPP)/(FBS,FES,FSS,FWL,FWS,LEL,TEU,TSS,TSU,TWS)/(FS,TF)/S(FS,TF)/2070E

 38 mm (1-½”) FDA Pro-Flo® & Pro-Flo X™ Models:

(P,PX,XPX)4/(SS,SZ)(A,C,L,N,S,V)(AA,LL,NN,PP,SS)/(BNU,EPU,FBS,FES,FSS,FWL,FWS,LEL,TEU,TSS,TSU,TWS,ZSS)/
(FB,FE,FS,FV,FW,TF,)/(FS,FW,STF)/(0067,0070,0075,0120)E

 51 mm (2”) FDA Pro-Flo® & Pro-Flo X™ Models:

(P,PX,XPX)8/SS(A,C,N,S,V)(AA,NN,PP,SS)/(BNU,EPU,FBS,FES,FSS,FWS,FWL,TEU,TSU,TSS,TWS,ZSS)/(FS,FW,TF)/
(FS,FW,STF)/(0070,0075,0120)E

 76 mm (3”) FDA Pro-Flo X™ Models:

(PX,XPX)15/SS(A,C,N,S)(AA,SS,PP)/(BNU,EPU,FSS,FWS,TEU,TSU,TSS,TWS,ZSS)/(FS,FW,TF)/(FS,FW,STF)/
(0070,0075,0120,0341)E

 38 mm (1-½”) FDA Pro-Flo® SHIFT Models:

XPS4/(SS,SZ)(AAA,NNN)/(FBS,FES,FWL,FWS,TSS,TWS.ZSS)/(FS,FW,TF)/(FS,FW,STF)/(0067,0070,0075,0120)E

 51 mm (2”) FDA Pro-Flo® SHIFT Models:

XPS8/(SS,SZ)(AAA,NNN)/(FBS,FES,FWL,FWS,TSS,TWS.ZSS)/(FS,FW,TF)/(FS,FW,STF)/(0070,0075,0120)E

 76 mm (3”) FDA Pro-Flo® SHIFT Models:

XPS15/( SS,SZ)(AAA,NNN)/(FWS,TSS,TWS,ZSS)/(FS,FW,TF)/(FS,FW,STF)/(0070,0120,0341)E

(as per Article 16 of REGULATION (EC) No 1935/2004)

th

October 2004 and (EC) No 2023/2006 of 22

nd

December 2006.

Materials used in the equipment that are intended to contact food belong to the groups of materials listed in Annex 1 (EC) 1935/2004.
(List of groups of materials and articles that may be covered by specific measures)

5) Rubbers

Compliance is subject to material and equipment storage, handling and usage recommended by Wilden
operation and maintenance manual and supplemental technical publications.

This declaration is based on the following information:

Wilden

Statements of raw material suppliers

®

will make available to the competent authorities appropriate documentation to demonstrate compliance.

Approved By:

Chris Distaso
Director of Engineering
Date: March 21, 2014

8) Metal and Alloy 10) Plastics

®

in the engineering

NOTES

NOTES

NOTES

Warrant y

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 InformatI on

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

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

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22069 Van Buren Street,

Grand Terrace, CA 92313-5607

Telephone: [phone]

Fax: [phone]

22069 Van Buren St.

Grand Terrace, CA 92313-5607

T: [phone]

www.maag.com

F: [phone]

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. 01-2014

Authorized PSG Representative:

Copyrigh t ©2014, Pump Solutions Gro up (PSG®), A Dover Company