Dover PSG Wilden GPS220, PSG Wilden GP Series, PSG Wilden GPS1, PSG Wilden GPS230 Engineering, Operation & Maintenance

EOM

Engineering

Operation &

Maintenance

Natural Gas-Operated

CSA-Certied

13 mm (1/2”) and
25 mm (1”) Metal Pump

Where Innovation Flows

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

GPS1 Metal Rubber-Fitted ..................................................6

GPS1 Metal PTFE-Fitted ....................................................6

GPS220/GPS230 Metal Rubber-Fitted .........................................7

GPS220/GPS230 Metal Full-Stroke PTFE-Fitted .................................7

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

SECTION 6 SUGGESTED INSTALLATION, OPERATION & TROUBLESHOOTING ........9

SECTION 7 DISASSEMBLY / REASSEMBLY ........................................12

Reassembly Hints & Tips ..................................................19

SECTION 8 EXPLODED VIEW & PARTS LISTING

GPS1 Metal .............................................................20

GPS220/GPS230 Metal ....................................................22

SECTION 9 REPAIR KITS ..........................................................28

Section 1

CAUTIONS—READ FIRST!

CAUTION: Do not apply pressurized gas to the

exhaust port — pump will not function.

TEMPERATURE LIMITS:

Buna-N –12°C to 82°C 10°F to 180°F

Polytetrafluoroethylene (PTFE)1 4°C to 104°C 40°F to 220°F

1

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

CAUTION: Canadian Standards Association

(CSA) configured pumps should not be used in
temperatures lower than 0°C (32°F) or higher than
52°C (125°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. Pumps must be
electrically grounded using the grounding
conductor provided. Improper grounding can
cause improper and dangerous operation.

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

supply pressure.

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: Ensure that the gas supply line is clear

of debris. Use an in-line air filter. A 5μ (micron) air
filter is recommended.

NOTE: When installing PTFE diaphragms,

it is important to tighten the outer pistons
simultaneously (turning in opposite directions)
to ensure a tight fit. (See torque specifications)

NOTE: Some 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.

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: The process fluid and cleaning fluids

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

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

temperature for all models.

CAUTION: Pumps should be thoroughly flushed

before installing into process lines.

WIL-17011-E-01 1 WILDEN PUMP & ENGINEERING, LLC

CAUTION: All CSA-certified pumps are fitted with

a single-point exhaust to route all exhaust gas
through the muffler exhaust port. The gas outlet
must be vented to a safe location in accordance
with local codes or, in the absence of local codes,
an industry or nationally recognized code having
jurisdiction over the specified installation.

CAUTION: Tighten all hardware prior to installation.

Section 2

`

WILDEN PUMP DESIGNATION SYSTEM

CSA-CERTIFIED
METAL PUMPS

Maximum Flow
Rates:
13 mm (1/2”)

60.2 lpm (15.9 gpm)

25 mm (1”)
204 lpm (54 gpm)

LEGEND

GPXXXX / X X XXX / XXX / XX/XXX / XXXX

MODEL

MATERIAL CODES

MODEL

GPS1 = ATEX, C SA ,

GPS22 0 = ATE X , CSA ,

GPS23 0 = ATE X , CSA ,

WETTED PARTS & OUTER PISTON

AA = ALUMINUM / ALUMINUM
SS = STAINLESS STEEL /

PRO-FLO SHIFT

PRO-FLO SHIF T
(THRE ADED)

PRO-FLO SHIF T
(FL ANGED)

STAINLESS STEEL

DIAPHRAGMS

AIR VALVE

CENTER BLOCK

WETTED PARTS & OUTER PISTON

AIR VALVE

A = ALUMINUM

DIAPHRAGMS

BNS = BUNA-N (Red Dot)
TXU = PTFE w/CONDUCTIVE

BUNA-N BACKUP

XBS = CONDUCTIVE BUNA-N

(Two Red Dots)

O-RINGS

VALVE SE AT

VALVE BALLS

VALVE BALL

BN = BUNA-N (Red Dot)
TF = P TFE ( White)

VALVE SE AT

A = ALUMINUM
S = STAINLESS STEEL

VALVE SE AT
& MANIFOLD O-RING

BN = BUN A-N
TF = P TFE ( White)

SPECIALT Y
CODE

(if applicable)

CENTER BLOCK

AA = A LUMINUM

SPECIALTY CODES

0014 BSPT (side-ported inlet and discharge on 1” models)
0504 DIN Flange
0677 NPT, center-ported inlet and discharge
0678 BSPT, center-ported inlet and discharge
0695 19 mm (3/4”) NPT, center-ported discharge (inlet facing air inlet, discharge facing air exhaust)
0696 19 mm (3/4”) BSPT, center-ported discharge (inlet facing air inlet, discharge facing air exhaust)
0697 19 mm (3/4”) NPT, center-ported discharge (inlet facing air exhaust, discharge facing air inlet)
0698 19 mm (3/4”) BSPT, center-ported discharge (inlet facing air exhaust, discharge facing air inlet)

NOTE: Most elastomer materials use colored dots for identification.

NOTE: Not all models are available with all material options.

WILDEN PUMP & ENGINEERING, LLC 2 WIL-17011-E-01

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 ac ts as
a separation membrane bet ween 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 the
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. A tm ospheri c
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, 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
forc es the inlet valve b all onto its se at 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.

FIGURE 3 At completion of the stroke,
the air valve again redirects air to the
back side of diaphragm A, which starts
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.

The heart of the patented Pro-Flo® SHIFT Air Distribution
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.

WIL-17011-E-01 3 WILDEN PUMP & ENGINEERING, LLC

Section 4

DIMENSIONAL DRAWINGS

GPS1 Metal

DIMENSIONS

ITEM METRIC (mm) STANDARD (inch)

A 208 8.2
B 28 1.1
C 130 5.1
D 198 7.8
E 224 8.8
F 41 1.6
G 126 5.0
H 216 8.5
J 354 14.0
K 131 5.2

L 30 1.2
M 137 5.4
N 109 4.3

P 84 3.3

R 102 4.0

S 8 0.3

T 203 8.0

U 142 5.6

V 112 4.4

LW0361 REV. A

GPS220 Metal

DIMENSIONS

ITEM METRIC (mm) STANDARD (inch)

A 361 14.2

B 36 1.4

C 163 6.4

D 254 10.0

E 287 11.3

F 56 2.2

G 417 16.4

H 71 2.8

J 140 5.5

K 155 6.1

L 206 8.1
M 173 6.8
N 104 4.1

P 127 5.0

R 10 0.4

LW0364 REV. A

WILDEN PUMP & ENGINEERING, LLC 4 WIL-17011-E-01

DIMENSIONAL DRAWINGS

GPS220 Metal, Center-Ported

DIMENSIONS

ITEM METRIC (mm) STANDARD (inch)

A 422 16.6
B 36 1.4
C 163 6.4
D 254 10.0
E 287 11.3
F 33 1.3
G 417 16.4
H 71 2.8
J 140 5.5
K 155 6.1

L 206 8.1
M 173 6.8
N 104 4.1

P 127 5.0

R 10 0.4

LW0365 REV. A

GPS230 Stainless Steel

DIMENSIONS

ITEM METRIC (mm) STANDARD (inch)

A 373 14.7

B 69 2.7

C 195 7.6

D 287 11.3

E 340 13.4

F 343 13.5

G 71 2.8

H 417 16.4

J 71 2.8

K 140 5.5

L 188 7.4
M 206 8.1
N 173 6.8

P 104 4.1

R 127 5.0

S 10 0.4

T 203 8.0

DIN (mm) ANSI (inch)

U 85 DIA. 3.1 DIA.

V 115 DIA. 4.3 DIA.
W 14 DIA. 0.6 DIA.

LW0366 REV. A

WIL-17011-E-01 5 WILDEN PUMP & ENGINEERING, LLC

[8] [15] [23] [30] [38] [45] [53] [61]

[8] [15] [23] [30] [38] [45] [53] [61]

Section 5

PERFORMANCE

GPS1 METAL

RUBBER-FITTED

Ship Weight ............ Aluminum 6 kg (13 lb)

316 Stainless Steel 9 kg (20 lb)
Alloy C 9.5 kg (21 lb)

Air Inlet .....................................6 mm (1/4”)

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

Outlet ...................................... 13 mm (1/2”)

Suction Lift ....................... 5.9 m Dry (19.3’)

9.8 m Wet (32.3’)

Disp. per Stroke1 ............. 0.10 L (0.027 gal)

Max. Flow Rate .......... 60.2 lpm (15.9 gpm)

Max. Size Solids .................. 1.6 mm (1/16”)

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 20.1 lpm (5.3 gpm)
against a discharge head of 3.4 bar (50
psig) requires 4.1 bar (60 psig) and 7.7
Nm3/h (4.8 scfm) air consumption.

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

V

4[7]

2 4 6 8 10 12 14 16

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.

8[14]

12[20]

16[27]

GPS1 METAL

PTFE-FITTED

Ship Weight ............ Aluminum 6 kg (13 lb)

316 Stainless Steel 9 kg (20 lb)
Alloy C 9.5 kg (21 lb)

Air Inlet .....................................6 mm (1/4”)

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

Outlet ...................................... 13 mm (1/2”)

Suction Lift ....................... 4.3 m Dry (14.2’)

9.7 m Wet (31.7’)

Disp. per Stroke1 ............. 0.10 L (0.026 gal)

Max. Flow Rate .......... 59.8 lpm (15.8 gpm)

Max. Size Solids .................. 1.6 mm (1/16”)

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 17.4 lpm (4.6 gpm)
against a discharge head of 2.1 bar (30
psig) requires 2.8 bar (40 psig) and 5.9
Nm3/h (3.5 scfm) air consumption.

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

4[7]

8[14]

12[20]

16[27]

2 4 6 8 10 12 14 16

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-17011-E-01

PERFORMANCE

GPS220/GPS230 METAL

RUBBER-FITTED

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

Ductile Iron 29 kg (64 lb)
316 Stainless Steel 31 kg (68 lb)

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

Inlet ............................................ 25 mm (1")

Outlet ......................................... 25 mm (1")

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

9.0 m Wet (29.5')

Disp. Per Stroke1 ................... 0.30 L (0.08 gal)

Max. Flow Rate .............. 204 lpm (54 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 140 lpm (37 gpm)
against a discharge pressure head of

2.8 bar (40 psig) requires 5.5 bar (80 psig)
and 60 Nm3/h (38 scfm) air consumption.
(See dot on chart.)

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.

GPS220/GPS230 METAL

FULL-STROKE
PTFE-FITTED

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

Ductile Iron 29 kg (64 lb)
316 Stainless Steel 31 kg (68 lb)

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

Inlet ............................................ 25 mm (1")

Outlet ......................................... 25 mm (1")

Suction Lift ........................5.2 m Dry (17.0')

9.0 m Wet (29.5')

Disp. Per Stroke1 ................... 0.30 L (0.08 gal)

Max. Flow Rate .............. 197 lpm (52 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 83.3 lpm (22 gpm)
against a discharge pressure head of

2.8 bar (40 psig) requires 4.1 bar (60 psig)
and 36 Nm3/h (23 scfm) air consumption.
(See dot on chart.)

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.

WIL-17011-E-01 7 WILDEN PUMP & ENGINEERING, LLC

SUCTION-LIFT CURVES

GPS1 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.

Traditional Rubber Diaphragms

PTFE Diaphragms

GPS220/GPS230
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.

WILDEN PUMP & ENGINEERING, LLC 8 WIL-17011-E-01

Section 6

CSA-CERTIFIED PUMP SUGGESTED INSTALLATION

Prior to pump installation, ensure that the flow and
suction lift requirements are within the pump model’s
capabilities. Refer to the Section 5, Performance of the
Engineering, Operation and Maintenance (EOM) Manual
for specific flow and suction-lift capabilities.

Before installation confirm that the pump materials of
construction are compatible with pumping application.
Refer to the Wilden Chemical Resistance Guide for
assistance with wetted path and elastomer options.

PIPING: The pump should be located so that the length
and complexity of the suction and discharge piping is
minimized. Unnecessary elbows, bends and fittings can
increase friction losses and should be avoided.

Pipe sizes should be selected to keep friction losses
within practical limits. The suction pipe diameter should
be equivalent or larger than the diameter of the suction
inlet on your Wilden pump. The suction hose must be non­collapsible, 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 to help reduce friction losses.

All piping should be supported independently of the
pump. In addition, the piping should be correctly aligned
with the inlet and discharge connection of the pump 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 and will also
assist in minimizing pump vibration.

GAS SUPPLY: The pump should have a supply line large
enough (a 3/4” supply line is recommended for 1-1/2” and
larger pumps) to supply the volume of air necessary to
achieve the desired pumping rate. Gas pressure to the
pump should be controlled by a pressure-regulating valve
and should not exceed a maximum of 6.9 bar (100 psig).
It is suggested that a needle valve be placed in the supply
line to control the flow of gas to the pump. For best results,
a 5μ (micron) filter should be installed before the gas inlet
of the pump to eliminate the majority of compressed gas
line contaminants.

TYPE OF GAS: Sweet gas is required for natural gas­powered pumps. Please consult the factory if considering
using sour gas as levels of hydrogen sulfide (H2S) may
cause unacceptable corrosion and chemical attack.

PUMP MOUNTING AND INSTALLATION: For simple
installation and removal of the pump shut-off valves
should be installed in the inlet and discharge plumbing.

If the pump is to be mounted in a fixed location, a mounting
pad placed between the pump and the foundation will
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 should be installed to protect the pump,
piping and gauges from surges and water hammer.

SOLIDS PASSAGE: All Wilden pumps are capable of
passing solids. A strainer should be used at the inlet of the
pump to ensure that the pump’s rated solids capabilities
are not exceeded. Refer to the Section 5 of this EOM
manual for specific solids-passage capabilities.

FLOODED SUCTION: Pumps in service with a positive
suction head are most efficient when the 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)
or higher.

SUCTION LIFT: When used in self-priming applications, it
is critical that all fittings and connections are airtight or a
reduction or loss of pump suction capability will result.

GAS OUTLET: All CSA-certified pumps are fitted with the
single point exhaust option so that all exhaust gases are
routed through the muffler plate exhaust port. The gas
outlet must be recaptured or vented to a safe location
in accordance with locally, nationally and/or industry
recognized codes.

GROUNDING: Pumps and accessories must be electrically
grounded to a proper grounding point to prevent an
accumulation of electro-static charge when used in
potentially explosive areas. CSA-certified pumps come
with a grounding strap and are fitted with a grounding
screw for the purpose of electrically grounding the
pump. Periodic inspection of the ground connection
should be performed to ensure the equipment is properly
grounded. Refer to the Wilden CE Safety Supplement
and Safety Manual for additional ATEX-certified pump
considerations.

FUNCTIONAL TESTING:

1. Tighten all hardware prior to initial start-up. Refer to
Section 7, Reassembly Hints & Tips in the EOM manual
for torque specifications.

2. Prior to pump installation connect compressed gas
line [do not exceed rated pressure of 6.9 bar (100
psig)] to gas inlet of pump to ensure that pump cycles
consistently.

3. Cycle pump for 2-3 minutes.

4. After pump installation, check piping connections for
leaks.

PUMP OPERATION:

1. To avoid damage to the pump new installations should
be checked for any debris in tank or piping system.

2. Once installation is complete, pump operation can
be started. Confirm the shut-off valves in the inlet
and discharge plumbing are open. Do not exceed the
pump’s maximum rated pressure of 6.9 bar (100 psig).
A pressure regulating valve and needle valve can be
used to adjust the speed of the pump.

3. Retighten all exposed fasteners after two (2) hours of
operation. Refer to Section 7, Reassembly Hints & Tips
in the EOM manual for torque specifications.

WIL-17011-E-01 9 WILDEN PUMP & ENGINEERING, LLC

CSA-CERTIFIED PUMP SUGGESTED INSTALLATION

FOOTPAD

DISCHARGE

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

EQUALIZER

SURGE DAMPENER

(OPTIONAL)

GAUGE

®

(OPTIONAL)

SHUT-OFF
VALVE

GROUNDING

LOCATION

MUFFLER

FLEXIBLE

CONNECTION

SUCTION

EMERGENCY SHUT-DOWN PROCEDURE: In the case of
an emergency situation, the pump should be stopped
immediately. To stop the pump’s operation close the gas
shut–off valve (user-supplied). A properly functioning
valve will cut-off the gas supply, stopping the pump. The
shut-off valve should be located far enough away from
the pumping equipment such that it can be reached safely
in an emergency situation.

In the event of pump or diaphragm failure, close shut-off
valves at the inlet and discharge of pump to eliminate the
possibility of medium leakage

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

FLEXIBLE
CONNECTION

NEEDLE VALVE

COMBINATION

FILTER & REGULATOR

AIR SHUT-OFF VALVE

Refer to the Wilden CE Safety Supplement, Safety Manual
and EOM Manual for additional information.

PRIOR TO MAINTENANCE: Before any maintenance is
performed, confirm pump is completely de-energized by
shutting off the pump and disconnecting the gas supply
line to the pump.

Refer to Section 7, Reassembly Hints & Tips and Section
8, Exploded View & Parts Listings in the EOM manual for
maintenance and spare parts information.

WILDEN PUMP & ENGINEERING, LLC 10 WIL-17011-E-01

CSA-CERTIFIED PUMP SUGGESTED OPERATION & MAINTENANCE

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

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. CSA-certified pumps
run on pressurized sweet gas 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.

TROUBLESHOOTING

Pump will not run or runs slowly.

1. Ensure that the gas inlet pressure is at least 0.4 bar
(5 psig) above startup pressure and that the differential
pressure (the difference between gas 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 gas leakage (blow by) that would
indicate worn seals /bores in the gas valve, pilot
spool and main shaft.

4. Disassemble pump and check for obstructions in
the gas 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 pistons that will cause the
gas valve spool to be unable to shift.

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-17011-E-01 11 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 gas valve freezes.

1. Check for excessive moisture in compressed
gas. Alternatively, a coalescing filter
may be used to remove the water from the
compressed gas in some applications.

Air bubbles in pump discharge.

1. Check for ruptured diaphragm.

2. Check tightness of outer pistons (refer to torque
specifications).

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:

• Appropriate-sized
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 used for these instructions incorporates rubber diaphragms and
balls. Models with PTFE diaphragms and balls are the same except where noted.
Your specific pump model may vary from configuration shown; however, pump
disassembly procedure will be the same.

Step 1

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

WILDEN PUMP & ENGINEERING, LLC 12 WIL-17011-E-01

Step 2

Using a 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

Remove the discharge valve
balls, seats and valve seat
O-rings from the discharge manifold
and liquid chamber, inspect for
nicks, gouges, chemical attack or
abrasive wear. NOTE: Replace worn
parts with genuine Wilden part for
reliable performance.

Step 5

Using a wrench, remove the inlet
manifold.

Step 6

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

Step 7

NOTE: This step is for PS1 pumps only.

Using an appropriate-sized wrench, remove the small clamp band that
connects the manifold elbows to the tee section. Remove the tee section
o-rings and inspect for signs of wear and/or chemical attack. Replace, if
necessary.

WIL-17011-E-01 13 WILDEN PUMP & ENGINEERING, LLC

Step 8

Using a wrench, remove the liquid
chambers from the center section.

PUMP DISASSEMBLY

Step 9

The liquid chamber should be
removed to expose the diaphragm
and outer piston. Rotate center
section and remove the opposite
liquid chamber.

Step 10

Using two adjustable wrenches,
remove diaphragm assembly from
center section assembly.

Step 11

After loosening and removing
the outer piston the diaphragm
assembly can be disassembled.

Step 12

To remove the remaining diaphragm
assembly from the shaft, secure
shaft with soft jaws (a vise fitted with
plywood or other suitable material) to
ensure shaft is not nicked, scratched,
or gouged. Using an adjustable
wrench, remove diaphragm assembly
from shaft. Inspect all parts for wear
and replace with genuine Wilden
parts if necessary.

WILDEN PUMP & ENGINEERING, LLC 14 WIL-17011-E-01

Step 13

Inspect diaphragms, outer and
inner pistons for signs of wear.
Replace with genuine Wilden parts
if necessary.

PUMP DISASSEMBLY

GROUNDING STRAP FOR CSA PUMPS

Figure 1 Figure 2

Canadian Standards Association (CSA) configured pumps must be
electrically grounded using the grounding strap provided (Figure 1).
Improper grounding can cause improper and dangerous operation. To
properly attach the grounding strap to a CSA-configured pump, identify
the designated grounding location on the muffler plate; using the
provided self-tapping screw and grounding wire, thread the grounding
screw through the grounding wire lug, into the muffler plate and tighten
securely (Figure 2). Completion of the pump grounding procedure must
be done in accordance with local codes, or in the absence of local codes,
an industrial or nationally recognized code having jurisdiction over the
specified installation.

WIL-17011-E-01 15 WILDEN PUMP & ENGINEERING, LLC

AIR VALVE / CENTER SECTION DISASSEMBLY

Tools Required:

• 3/16” Hex-Head
Wrench

7/32” Hex-Head

•
Wrench

• Snap-Ring Pliers

• O-Ring Pick

CAUTION: Before any maintenance or repair is attempted, the compressed air line
to the pump should be disconnected and all air pressure allowed to bleed from the
pump. Disconnect all intake, discharge and air lines. Drain the pump by turning it
upside down and allowing any 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. The Pro-Flo® 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 3/16” hex head wrench,
loosen the air valve bolts.

WILDEN PUMP & ENGINEERING, LLC 16 WIL-17011-E-01

Step 2

Remove the air valve and muffler
plate from the center section.

Step 3

Remove the air valve gasket
and inspet for nicks, gouges and
chemical attack. Replace if necessary
with genuine Wilden parts. NOTE:
When installing the air valve gasket
onto the center section assembly,
position gasket with the grooved
side facing away from the center
section.

AIR VALVE / CENTER SECTION DISASSEMBLY

Step 4

Remove muffler plate gasket and
inspect. Replace, if necessary.

Step 5

Remove air valve end cap to expose
air valve spool. NOTE: The end cap
cannot be removed until removing
air valve bolts.

Step 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
removed from assembly. Seals are not
sold separately.

Step 7

Remove pilot spool retaining snap­ring on both sides of center section
with snap-ring pliers.

WIL-17011-E-01 17 WILDEN PUMP & ENGINEERING, LLC

Step 8

Remove pilot spool assembly from
center section.

Step 9

Using an O-ring pick, gently remove the pilot
spool retaining O-ring from the opposite
side of the notched end of the spool. Gently
remove the pilot spool from pilot spool sleeve
and inspect for nicks, gouges and other
signs of wear. Replace pilot spool assembly
or outer sleeve O-rings if necessary. During
re-assembly never insert the pilot spool into
the sleeve with the “notched” end side first,
this end incorporates the urethane O-ring
and will be damaged as it slides over the
ports cut in the pilot spool sleeve.

AIR VALVE / CENTER SECTION DISASSEMBLY

Step 10

Check center section shaft seals
for signs of wear. If necessary,
remove the shaft seals with an
O-ring pick and replace.

SINGLE-POINT EXHAUST PRO-FLO® SHIFT

Standard Single-Point Exhaust

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.

Step 2

Next, install an optional single-point exhaust gasket
(01-2621-52). 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.

WILDEN PUMP & ENGINEERING, LLC 18 WIL-17011-E-01

REASSEMBLY HINTS & TIPS

RE A S 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
lubricate 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.

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

PRO-FLO® SHIFT MAXIMUM TORQUE SPECIFICATIONS

Description of Part Torque

Air Valve 11.3 N•m (100 in-lb)

Outer Piston 14.1 N•m (125 in-lb)

Small Clamp Band 1.7 N•m (15 in-lb)

Large Clamp Band (Rubber/ TPE-F itted) 9.0 N•m (80 in-lb)

Large Clamp Band (PT FE-F itted) 13.6 N•m (120 in-lb)

Vert ical Bolts 14.1 N•m (125 in-lb)

Figure A

SHA FT SE AL

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 a kidney shape. (See Figure B.)

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

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

• After the pliers are removed, you will notice a slight
bump in the seal shape. Before the seal can be properly
resized, the bump in the seal should be removed as
much as possible. This can be done with either the
Phillips screwdriver or your 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
white EP bearing grease.

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

• Perform these steps for the remaining seals.

Figure B

NEEDLE-NOSE

PLIERS

NLGI grade 2

TAPE

SHA FT SE AL

WIL-17011-E-01 19 WILDEN PUMP & ENGINEERING, LLC

TAPE

Section 8

`

GPS1 METAL

EXPLODED VIEW & PARTS LISTING

EXPLODED VIEW

PTFE-FITTED

LWO482 REV. B

METAL ADS

ALL CIRCLED PART IDENTIFIERS ARE INCLUDED IN REPAIR KITS

WILDEN PUMP & ENGINEERING, LLC 20 WIL-17011-E-01

EXPLODED VIEW & PARTS LISTING

GPS1 METAL

Item

Description Qty.

GPS1/AAAAA

P/N

AIR DISTRIBUTION COMPONENTS

1 Pro-Flo X® Air Valve Assembly

2 End Cap 1 01-2340-01

3 O-Ring (-126), End Cap (Ø1.362 x Ø.103) 1 01-2395-52
4 Gasket, Air Valve, Pro-Flo X
5 Gasket, Muffler Plate, Pro-Flo X

6 Muffler Plate, Pro-Flo X
7 Screw, SHC, Air Valve (1/4"-20 x 3") 4 01-6001-03
8 Center Block Assembly, Pro-Flo Shift

9 Pilot Sleeve Assembly 1 01-3880-99
10 O-Ring (-009), Pilot Spool Retaining (Ø.208" x .070") 2 04-2650-49-700
11 Shaft Seal 2 01-3220-55

12 Screw, 10-32 x .50 Self-Tapping Grounding 1 04-6345-08
13 Retaining Ring 1 00-2650-03
14 Grounding Strap, CSA 1 01-8303-99
15 Plug, Pipe, 1/4" MNPT 1 00-7010-03

1

®

®

®

™ 2

1 01-2030-01

1 01-2621-52
1 01-3502-52

1 01-3185-01

1 01-3139-01

WETTED PATH COMPONENTS

16 Liquid Chamber 2 01-5000-01 01-5000-03
17 Manifold Tee Section 2 01-5160-01 01-5160-03
18 Inlet Manifold Elbow 2 01-5220-01 01-5220-03
19 Discharge Manifold Elbow 2 01-5230-01 01-5230-03
20 RHSN Bolt, Liquid Chamber (1/4"-20 x 7-1/2") 4 01-6080-03
21 Washer, Flat (Ø.281 x Ø.625 x .065) 4 01-6730-03
22 Large Clamp Band Assembly 4 01-7300-03
23 RHSN Bolt, Large Clamp Band (1/4"-20 x 2-1/4") 4 01-6070-03
24 Hex Nut (1/4"-20) 8 04-6400-03
25 Small Clamp Band Assembly 8 01-7100-03
26 Screw, HHC (#10-24 x 1") 8 01-6101-03
27 Hex Nut (#10-24) 8 01-6400-03

VALVE BALLS/VALVE SEATS/VALVE O-RINGS

28 Ball, Valve 4 01-1080-52

Ball, Valve, PTFE Fitted 4 01-1080-55
29 Seat, Valve 4 01-1120-01 01-1120-03
30 O-Ring (-119), Valve Seat (Ø.924 x Ø.103) 4 00-1260-52

O-Ring (-119), Valve Seat (Ø.924 x Ø.103) PTFE Fitted 4 01-1200-55
31 O-Ring, Manifold (-120), (Ø.987 x Ø.103) 4 01-1300-52

O-Ring, Manifold (-120), (Ø.987 x Ø.103) PTFE Fitted 4 01-1300-55

RUBBER/PTFE COMPONENTS

32 Shaft 1 01-3810-03
33 Stud, Shaft (5/16"-18 x 1-3/8") 2 01-6150-03
34 Spring, Disc (Ø.331 x Ø.512) 2 01-6802-08
35 Inner Piston 2 01-3711-08

36 Diaphragm, Primary 2 01-1010-52

Diaphragm, Primary 2 01-1010-86

Diaphragm, Primary, PTFE Fitted 2 01-1010-55
37 Diaphragm, Backup, PTFE Fitted 2 01-1060-86

38 Outer Piston 2 01-4570-01 01-4570-03

1

Air Valve Assembly includes items 2 and 3.

2

Center Section Assembly includes item 11.

All boldface items are primary wear items.

GPS1/SSAAA

PARTS LISTING

P/N

LW0483 REV. B

WIL-17011-E-01 21 WILDEN PUMP & ENGINEERING, LLC

EXPLODED VIEW & PARTS LISTING

GPS220/GPS230 METAL

EXPLODED VIEW

PTFE-FITTED

STAINLESS STEEL
FLANGED

LWO484 REV. B

METAL ADS

WILDEN PUMP & ENGINEERING, LLC 22 WIL-17011-E-01

EXPLODED VIEW & PARTS LISTING

GPS220/GPS230 METAL

Item

1 Pro-Flo X® Air Valve Assembly
2 O-Ring, End Cap (-126, Ø1.362 x Ø.103) 2 01-2395-52

3 End Cap 2 01-2340-01
4 Screw, SHC, Air Valve (1/4"-20 x 3") 4 01-6001-03
5 Muffler Plate, Pro-Flo X

6 Gasket, Muffler Plate, Pro-Flo X
7 Gasket, Air Valve, Pro-Flo X

8 Center Section Assembly, Pro-Flo SHIFT

9 Pilot Sleeve Assembly 1 02-3880-99
10 Pilot Spool Retaining O-Ring (-009. Ø.208 x Ø.070) 1 04-2650-49-700
11 Shaft Seal 2 02-3210-55-225

12 Retaining Ring 1 00-2650-03
13 Grounding Screw, (10-32 x 1/2") Self-Tapping 1 04-6345-08
14 Grounding Strap, CSA 1 01-8303-99
15 Plug, Pipe, 1/4" MNPT 1 00-7010-03

Description Qty.

AIR DISTRIBUTION COMPONENTS

1

®

®

®

2

GPS220/230/AAAAA

P/N

1 02-2030-01

1 02-3185-01

1 02-3502-52
1 02-2621-52

1 02-3138-01

WETTED PATH COMPONENTS

16 Liquid Chamber 2 02-5015-01 02-5015-03
17 Inlet Manifold, Side Ported, 1" NPT 1 02-5095-01 02-5095-03

Inlet Manifold, Side Ported, 1" BSPT 1 02-5096-01 02-5096-03
Inlet Manifold, Center Ported, 1" NPT 1 02-5095-01-677 02-5095-03-677
Inlet Manifold, Center Ported, 1" BSPT 1 02-5096-01-678 02-5096-03-678
Inlet Manifold, ANSI Flange 1 02-5090-03
Inlet Manifold, DIN Flange 1 02-5091-03

18 Discharge Manifold, Side Ported, 1" NPT 1 02-5035-01 02-5035-03

Discharge Manifold, Side Ported, 1" BSPT 1 02-5036-01 02-5036-03
Discharge Manifold, Center Ported, 3/4" NPT 1 02-5035-01-697 02-5035-03-697
Discharge Manifold, Center Ported, 3/4" BSPT 1 02-5036-01-698 02-5036-03-698
Discharge Manifold, Center Ported, 1" NPT 1 02-5035-01-677 02-5035-03-677
Discharge Manifold, Center Ported, 1" BSPT 1 02-5036-01-678 02-5036-03-678
Discharge Manifold, ANSI Flange 1 02-5030-03

Discharge Manifold, DIN Flange 1 02-5031-03
19 Screw, HHC, 5/16"-18 x 1" 32 08-6180-03-42
20 Washer, 5/16" 32 02-6731-03
21 Pipe Plug, 1" NPT 2 02-7010-01 02-7010-03

Pipe Plug, 1" BSPT 2 02-7011-01 02-7011-03

VALVE BALLS/VALVE SEATS/VALVE O-RINGS/MANIFOLD O-RING

22 Ball, Valve 4 02-1085-52

Ball, Valve, PTFE Fitted 4 02-1085-55
23 O-ring, Manifold (-229, Ø2.359 x Ø.139) 4 70-1280-52

O-ring, Manifold (-229, Ø2.359 x Ø.139) PTFE Fitted 4 70-1280-55
24 Valve Seat 4 02-1125-01 02-1125-03

O-ring, Valve Seat (-224, Ø1.734 x Ø.139) 4 02-1205-52

O-ring, Valve Seat (-224, Ø1.734 x Ø.139) PTFE Fitted 4 02-1205-55

25

RUBBER/PTFE COMPONENTS

26 Shaft 1 02-3810-03

Shaft, PTFE Fitted 1 02-3840-03
27 Stud, 3/8"-16 x 1 1/4" 2 02-6150-08
28 Disc Spring 2 02-6802-08
29 Inner Piston 2 02-3701-01

Inner Piston, PTFE Fitted 2 02-3751-01

30 Diaphragm, Primary 2 02-1010-52

Diaphragm, Primary 2 02-1010-86

Diaphragm, Primary, PTFE Fitted 2 02-1010-55
31 Diaphragm, Back-Up, PTFE Fitted 2 02-1060-86

32 Outer Piston 2 02-4550-01 02-4550-03

Outer Piston, PTFE Fitted

2

02-4601-01 02-4600-03

GPS220/230/SSAAA

P/N

LW0485 REV. B

PARTS LISTING

*Refer to Elastomer Options in
Section 9.

1

Air Valve Assembly includes

item numbers 2 and 3.

2

Center Section Assembly

includes items 9, 10, 11 and 12.

All boldface items are primary
wear items.

WIL-17011-E-01 23 WILDEN PUMP & ENGINEERING, LLC

NOTES

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 SUBMIT TED 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. 11-2018

Authorized PSG Representative:

Copyrigh t ©2018, PS G®, A Dover Compa ny

WIL-17011-E-01

REPLACE S WIL-17 010 -E- 04