EOM GPS420 Installation guide

WIL-17100-E-03
Where InnovationFlows
EOM
ENGINEERING OPERATION
& MAINTENANCE MANUAL
GPS420/GPS430, GPS820/830
and GPS1520/GPS1530
CSA-Certified Metal Pumps

WIL-17100-E-03 2
CSA-Certified Pumps
Copyright
Copyright 2018 PSG
®
, a Dover Company. All rights reserved.
PSG reserves the right to modify the information and illustrations in this document without prior
notice. The product described in this document is furnished under a license agreement or
nondisclosure agreement. No part of this document may be reproduced, stored in a retrieval
system, or transmitted in any form or any means electronic or mechanical, including
photocopying and recording, without the written permission of PSG, a Dover Company, except
as described by the terms of those agreements.
This is a non-contractual document.
Trademarks
PSG and the PSG logo are registered trademarks of PSG. Wilden
®
is a registered trademark of
PSG California LLC. Pro-Flo
®
SHIFT and Pro-Flo
®
are registered trademarks of PSG California
LLC. Wil-Flex
®
is a trademark of PSG California LLC. Saniflex™ is a trademark of PSG
California LLC.
All trademarks, names, logos and service marks (collectively “trademarks”) in this document are
registered and unregistered trademarks of their respective owners. Nothing contained in this
document should be construed as granting any license or right to use any trademark without the
prior written permission of the trademark owner.
Warranty
Each and every product manufactured by Wilden is built to meet the highest standards of
quality. Every pump is functionally tested to ensure integrity of operation. Wilden 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.
For more information, and to register your Wilden pump for warranty, please visit
https://www.psgdover.com/wilden/support/warranty-registration.
Certifications

WIL-17100-E-03 3
CSA-Certified Pumps
CONTENTS
SECTION 1: Precautions – Read First! ..................................................................................................... 4
SECTION 2: Wilden Pump Designation System ...................................................................................... 5
SECTION 3: How It Works .......................................................................................................................... 6
SECTION 4: Dimensional Drawings .......................................................................................................... 7
SECTION 5: Performance ......................................................................................................................... 12
GPS420/GPS430 Metal EZ-Install TPE-Fitted........................................................................................ 12
GPS420/GPS430 Metal Full-Stroke PTFE-Fitted ................................................................................... 12
GPS820/GPS830 Metal EZ-Install TPE-Fitted........................................................................................ 13
GPS820/GPS830 Metal Full-Stroke PTFE-Fitted ................................................................................... 13
GPS1520/GPS1530 Metal EZ-Install TPE-Fitted.................................................................................... 14
GPS1520/GPS1530 Metal Full-Stroke PTFE-Fitted ............................................................................... 14
Suction Lift Capability.............................................................................................................................. 15
SECTION 6: Suggested Installation, Operation, Maintenance, and Troubleshooting ....................... 17
SECTION 7: Disassembly/Reassembly................................................................................................... 20
Pump Disassembly ................................................................................................................................. 20
Grounding Strap for CSA Pumps ............................................................................................................ 22
Air Valve/Center Section Disassembly.................................................................................................... 23
Single-Point Exhaust............................................................................................................................... 26
Reassembly Hints and Tips .................................................................................................................... 26
SECTION 8: Exploded View and Parts List............................................................................................. 28

WIL-17100-E-03 4
CSA-Certified Pumps
SECTION 1
WARNING: Always wear safety glasses when operating
a pump to avoid eye injury. If diaphragm rupture occurs,
material being pumped may be forced out of the air
exhaust.
CAUTION: Do not apply pressurized gas to the exhaust
port – pump will not function.
CAUTION: Do not over-lubricate air supply– excess
lubrication will reduce pump performance. Pump is pre-
lubed.
TEMPERATURE LIMITS:
Buna-N -12°C to 82°
C
10°F to 180°
F
PTFE* 4°C to 104°
C
40°F to 220°
F
Wil-Fle
x
-40°C to 107°
C
-40°F to 225°
F
*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 on
mechanical stress only. Certain chemicals will reduce
maximum safe operating temperatures significantly.
Consult the 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: Do not exceed 82°C (180°F) air inlet
temperature for all models.
CAUTION: The process fluid and cleaning fluids must be
compatible chemically with all wetted pump components.
Consult chemical resistance guide.
CAUTION: Before attempting any maintenance or repair,
disconnect the compressed air line to the pump and allow
all air pressure 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.
CAUTION: Thoroughly flush pumps before installing
them into process lines.
CAUTION: Ensure that the gas supply line is clear of
debris. Use an in-line air filter. A 5µ (micron) air filter is
recommended.
CAUTION: Before installation, tighten all hardware.
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.
NOTE: Materials of construction and elastomer material
may influence suction lift parameters. Please refer to
“Performance” for specifics.
NOTE: When installing PTFE diaphragms, it is important
to tighten outer pistons simultaneously (turning in
opposite directions) to ensure tight fit. (See “Maximum
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: In the event of a power failure, close the shut-off
valve if you do not want the pump to restart when the
power returns.
NOTE: The Safety Supplement document is a part of the
manual. Please refer to the Safety Supplement document
for a complete list of safety considerations including
considerations for safe operation and maintenance of
pumps marked for ATEX environments before starting
the pump.
WARNING: This product can expose you to chemicals
including Nickel, Chromium, Cadmium, or Cobalt, which
are known to the State of California to cause cancer
and/or birth defects or other reproductive harm. For more
information, go to www.P65Warnings.ca.gov.
PRECAUTIONS – READ FIRST!

WIL-17100-E-03 5
CSA-Certified Pumps
SECTION 2
MATERIAL CODES
MODEL
GPS420 = PRO-FLO
®
SHIFT ATEX
THREADED PORTS
GPS430 = PRO-FLO
®
SHIFT ATEX
FLANGED PORTS
GPS820 = PRO-FLO
®
SHIFT ATEX
THREADED PORTS
GPS830 = PRO-FLO
®
SHIFT ATEX
FLANGED PORTS
GPS1520 = PRO-FLO
®
SHIFT ATEX
THREADED PORTS
GPS1530 = PRO-FLO
®
SHIFT ATEX
FLANGED PORTS
WETTED PARTS & OUTER PISTON
AA = ALUMINUM/ALUMINUM
SS = STAINLESS
STEEL/STAINLESS STEEL
AIR CHAMBERS
A = ALUMINUM
S = STAINLESS STEEL
CENTER BLOCK
A = ALUMINUM
S = STAINLESS STEEL
AIR VALVE
A = ALUMINUM
S = STAINLESS STEEL
DIAPHRAGMS
TWS = FULL-STROKE PTFE
W/WIL-FLEX™ BACK-UP
ZWS = WIL-FLEX™, EZ-INSTALL
[SANTOPRENE
®
(THREE
BLACK DOTS)]
XBS = CONDUCTIVE BUNA-N
(TWO RED DOTS)
VALVE BALLS
BN = BUNA-N (RED DOT)
TF = PTFE (WHITE)
WF = WIL-FLEX™ [SANTOPRENE
®
(THREE BLACK DOTS)]
VALVE SEATS
A = ALUMINUM
S = STAINLESS STEEL
WF = WIL-FLEX™ [SANTOPRENE
®
(THREE BLACK DOTS)]
VALVE SEAT O-RINGS
TF = PTFE
SPECIALT
Y
CODES
0014 BSPT
0504 DIN flange
NOTE: Most elastomeric materials use colored dots for identification
NOTE: Not all models are available with all material options
CSA-CERTIFIED PUMPS LEGEND GPS XXX
/
X X X X X
/
X X X
/
X X
/
X X X
/
X X X X
GPS420/GPS430 –
38 mm (1-1/2″) Pump
GPS820/GPS830 –
51 mm (2") Pump
GPS1520/GPS1530 –
76 mm (3") Pump
O-RINGS
MODEL VALVE SEATS SPECIALT
Y
VALVE BALLS CODE
DIAPHRAGMS
AIR VALVE
CENTER BLOCK
AIR CHAMBERS
WETTED PARTS & OUTER PISTON
WILDEN PUMP DESIGNATION SYSTEM
(
if a
pp
licable
)

WIL-17100-E-03 6
CSA-Certified Pumps
SECTION 3
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.
FIGURE 1 The air valve directs pressurized air to
the back side of diaphragm A. The compressed
air is applied directly to the liquid column
separated by elastomeric diaphragms. The
diaphragm acts as a separation membrane
between the compressed air and liquid; a
balanced load removes mechanical stress from
the diaphragm. The compressed air moves the
diaphragm away from the center of the pump.
The opposite diaphragm is pulled in by the shaft
connected to the pressurized diaphragm.
Diaphragm B is on its suction stroke; air behind
the diaphragm has been forced out to
atmosphere through the exhaust 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).
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 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.
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
starting point, each diaphragm has gone through
one exhaust and one discharge stroke. This
constitutes one complete pumping cycle. The
pump may take several cycles to completely
prime depending on the conditions of the
application.
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 each stroke.
HOW IT WORKS – AIR-OPERATED DOUBLE-DIAPHRAGM PUMP
HOW IT WORKS – AIR DISTRIBUTION SYSTEM

WIL-17100-E-03 7
CSA-Certified Pumps
SECTION 4
GPS420 METAL DIMENSIONS
ITEM
METRIC
(mm)
STANDARD
(inch)
A
442 17.4
B 64 2.5
C 261 10.3
D 391 15.4
E 445 17.5
F 51 2.0
G 249 9.8
H 49 1.9
J 132 5.2
K 333 13.1
L 326 12.9
M 531 20.9
N 525 20.7
P 274 10.8
R 224 8.8
S 152 6.0
T 178 7.0
U 11 0.4
LW0231 REV. E
GPS430 ALUMINUM DIMENSIONS
ITEM
METRIC
(mm)
STANDARD
(inch)
A
442 17.4
B 80 3.1
C 324 12.7
D 531 20.9
E 594 23.4
F 606 23.9
G 122 4.8
H 122 4.8
J 50 2.0
K 132 5.2
L 334 13.1
M 531 20.9
N 312 12.3
P 274 9.7
R 206 8.1
S 152 6.0
T 170 6.7
U 11 0.4
DIN (mm) ANSI (Inch)
V 150 DIA. 5.0 DIA.
W 109 DIA. 4.3 DIA.
X 16 DIA. 0.6 DIA.
LW0296 REV. B
DIMENSIONAL DRAWING

WIL-17100-E-03 8
CSA-Certified Pumps
GPS430 STAINLESS STEEL DIMENSIONS
ITEM METRIC (mm)
STANDARD
(inch)
A
443 17.5
B 89 3.5
C 285 11.2
D 528 20.8
E 529 20.8
F 273 10.8
G 49 1.9
H 84 3.3
J 86 3.4
K 132 5.2
L 333 13.1
M 326 12.9
N 531 20.9
P 525 20.7
R 274 10.8
S 224 8.8
T 178 7.0
U 203 8.0
V 11 0.4
DIN (mm) ANSI (Inch)
W 150 DIA. 5.0 DIA.
X 109 DIA. 4.3 DIA.
Y 16 DIA. 0.6 DIA
LW0233 REV. D
GPS820 ALUMINUM DIMENSIONS
ITEM
METRIC
(mm)
STANDARD
(inch)
A
453 17.9
B 48 1.9
C 358 14.1
D 630 24.8
E 670 26.4
F 62 2.4
G 346 13.6
H 48 1.9
J177 7.0
K 366 14.4
L 687 27.1
M 324 12.8
N 257 10.1
P 229 9.0
R 254 10.0
S 14 0.6
LW0238 REV. C
DIMENSIONAL DRAWING

WIL-17100-E-03 9
CSA-Certified Pumps
GPS820 STAINLESS STEEL DIMENSIONS
ITEM
METRIC
(mm)
STANDARD
(inch)
A
452 17.8
B 64 2.5
C 367 14.3
D 620 24.4
E 658 25.9
F 58 2.3
G 354 14.0
H 48 1.9
J 178 7.0
K 366 14.4
L 359 14.2
M 687 27.0
N 679 26.8
P 305 12.0
R 254 10.0
S 229 9.0
LW0240 REV. B
GPS830 ALUMINUM DIMENSIONS
ITEM
METRIC
(mm)
STANDARD
(inch)
A
452 17.8
B 89 3.5
C 400 15.7
D 675 26.6
E 752 29.6
F 758 29.8
G 116 4.6
H 117 4.6
J 387 15.3
K 48 1.9
L 177 7.0
M 366 14.4
N 687 27.1
P 324 12.8
R 254 10.0
S 326 12.8
T 378 14.9
U 16 0.6
DIN (mm) ANSI (Inch)
V 165 DIA. 6.0 DIA.
W 125 DIA. 4.8 DIA.
X 18 DIA. 0.8 DIA.
LW0239 REV. C
DIMENSIONAL DRAWING

WIL-17100-E-03 10
CSA-Certified Pumps
GPS830 STAINLESS STEEL DIMENSIONS
ITEM
METRIC
(mm)
STANDARD
(inch)
A
452 17.8
B 89 3.5
C 424 16.7
D 678 26.7
E 754 29.7
F 760 29.9
G 116 4.6
H 115 4.5
J 412 16.2
K 48 1.9
L 177 7.0
M 361 14.2
N 361 14.2
P 677 27.1
R 682 26.9
S 304 12.0
T 254 10.0
U 325 12.8
DIN (mm) ANSI (Inch)
X 165 DIA. 6.0 DIA.
Y 125 DIA. 4.8 DIA.
Z 18 DIA. 0.8 DIA.
LW0241 REV. B
GPS1520 ALUMINUM DIMENSIONS
ITEM
METRIC
(mm)
STANDARD
(inch)
A
635 25.0
B 61 2.4
C 426 16.8
D 759 29.9
E 818 32.2
F 84 3.3
G 414 16.3
H 48 1.9
J 211 8.3
K 189 7.4
L 720 28.4
M 358 14.1
N 307 12.1
P 257 10.1
R 282 11.1
S 15 0.6
LW0258 REV. C
DIMENSIONAL DRAWING

WIL-17100-E-03 11
CSA-Certified Pumps
GPS1520 STAINLESS STEEL DIMENSIONS
ITEM
METRIC
(mm)
STANDARD
(inch)
A
650 25.6
B 71 2.8
C 443 17.5
D 765 30.1
E 815 32.1
F 71 2.8
G 431 17.0
H 48 1.9
J 211 8.3
K 189 7.4
L 184 7.3
M 721 28.4
N 715 28.2
P 356 14.0
R 305 12.0
S 257 10.1
T 279 11.0
U 15 0.6
LW0259 REV. C
GPS1530 STAINLESS STEEL DIMENSIONS
ITEM
METRIC
(mm)
STANDARD
(inch)
A
673 26.5
B 105 4.1
C 477 18.8
D 796 31.3
E 890 35.1
F 891 35.3
G 90 3.6
H 88 3.5
J 465 18.3
K 48 1.9
L 211 8.3
M 189 7.4
N 184 7.3
P 721 28.4
R 715 28.2
S 356 14.0
T 305 12.0
U 256 10.1
DIN (mm) ANSI (Inch)
X 200 DIA. 7.5 DIA.
Y 160 DIA. 6.0 DIA.
Z 18 DIA. 0.8 DIA.
LW0260 REV. C
DIMENSIONAL DRAWING

WIL-17100-E-03 12
CSA-Certified Pumps
SECTION 5
GPS420/GPS430 METAL
EZ-INSTALL TPE-FITTED
Ship Weights…420 Threaded AL 26 kg (57 lb)
420 Threaded SS 50 kg (111 lb)
430 Flanged AL 28 kg (62 lb)
430 Flanged SS 53 kg (116 lb)
Air Inlet……………………………………….3/4"
Inlet……………………………...38 mm (1-1/2")
Outlet……………………………38 mm (1-1/2")
Suction Lift……………...........4.7 m Dry (15.3′)
9.0 m Wet (29.5′)
Disp. per Stroke
1
….…………...0.8 L (0.22 gal)
Max. Flow Rate……………441 lpm (117 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 242 lpm (64 gpm) against
a discharge head of 2.1 bar (30 psig) requires
4.1 bar (60 psig) and 63 Nm
3
/h (37 scfm) air
consumption.
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.
Caution: Do not exceed 8.6 bar
(
125 psi
g)
air suppl
y
pressure.
GPS420/GPS430 METAL
FULL-STROKE
PTFE-FITTED
Ship Weights…420 Threaded AL 26 kg (57 lb)
420 Threaded SS 50 kg (111 lb)
430 Flanged AL 28 kg (62 lb)
430 Flanged SS 53 kg (116 lb)
Air Inlet……………………………………….3/4"
Inlet……………………………...38 mm (1-1/2")
Outlet……………………………38 mm (1-1/2")
Suction Lift……………...........4.5 m Dry (14.8′)
8.6 m Wet (28.4′)
Disp. per Stroke
1
….…………...0.9 L (0.24 gal)
Max. Flow Rate……………460 lpm (122 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 280 lpm (74 gpm) against
a discharge head of 2.1 bar (30 psig) requires
5.5 bar (80 psig) and 88 Nm
3
/h (52 scfm) air
consumption.
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.
Caution: Do not exceed 8.6 bar (125 psig) air supply pressure.
PERFORMANCE

WIL-17100-E-03 13
CSA-Certified Pumps
GPS820/GPS830 METAL
EZ-INSTALL TPE-FITTED
Ship Weight...820 Threaded AL 47 kg (104 lb)
820 Threaded SS 73 kg (161 lb)
830 Flanged AL 54 kg (118 lb)
830 Flanged SS 81 kg (178 lb)
Air Inlet……………………………………….3/4"
Inlet…………………………………..51 mm (2")
Outlet………………………………...51 mm (2")
Suction Lift……………………5.5 m Dry (18.2′)
9.0 m Wet (29.5′)
Disp. per Stroke
1
……….….2.1 L (0.55 gal)
Max. Flow Rate……………645 lpm (171 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 416 lpm (110 gpm)
against a discharge head of 2.1 bar (30 psig)
requires 5.5 bar (80 psig) and 102 Nm
3
/h
(60 scfm) air consumption.
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.
Caution: Do not exceed 8.6 bar
(
125 psi
g)
air suppl
y
pressure.
GPS820/GPS830 METAL
FULL-STROKE
PTFE-FITTED
Ship Weight...820 Threaded AL 47 kg (104 lb)
820 Threaded SS 73 kg (161 lb)
830 Flanged AL 54 kg (118 lb)
830 Flanged SS 81 kg (178 lb)
Air Inlet……………………………………….3/4"
Inlet…………………………………..51 mm (2")
Outlet………………………………...51 mm (2")
Suction Lift……………………6.1 m Dry (20.0′)
9.0 m Wet (29.5′)
Disp. per Stroke
1
……….….2.4 L (0.63 gal)
Max. Flow Rate……………636 lpm (168 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 379 lpm (100 gpm)
against a discharge head of 2.1 bar (30 psig)
requires 5.5 bar (80 psig) and 112 Nm
3
/h
(66 scfm) air consumption.
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.
Caution: Do not exceed 8.6 bar
(
125 psi
g)
air suppl
y
pressure.
PERFORMANCE

WIL-17100-E-03 14
CSA-Certified Pumps
GPS1520/GPS1530 METAL
EZ-INSTALL TPE-FITTED
Ship Weight:
1520 Threaded AL 69 kg (152 lb)
1520 Threaded SS 126 kg (278 lb)
1530 Flanged SS 137 kg (300 lb)
Air Inlet……………………………………….3/4"
Inlet…………………………………..76 mm (3")
Outlet………………………………...76 mm (3")
Suction Lift……………….…..4.7 m Dry (15.3′)
9.0 m Wet (29.5′)
Disp. per Stroke
1
……………....4.2 L (1.11 gal)
Max. Flow Rate………..…..884 lpm (234 gpm)
Max. Size Solids……………….12.7 mm (1/2")
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 659 lpm (174 gpm)
against a discharge head of 1.4 bar (20 psig)
requires 5.5 bar (80 psig) and 143 Nm
3
/h
(84 scfm) air consumption.
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.
Caution: Do not exceed 8.6 bar (125 psig) air supply pressure.
GPS1520/GPS1530 METAL
FULL-STROKE
PTFE-FITTED
Ship Weight:
1520 Threaded AL 69 kg (152 lb)
1520 Threaded SS 126 kg (278 lb)
1530 Flanged SS 137 kg (300 lb)
Air Inlet……………………………………….3/4"
Inlet…………………………………..76 mm (3")
Outlet………………………………...76 mm (3")
Suction Lift……………….…..5.9 m Dry (19.3′)
8.6 m Wet (28.4′)
Disp. per Stroke
1
……………....5.0 L (1.32 gal)
Max. Flow Rate………..…..993 lpm (246 gpm)
Max. Size Solids……………….12.7 mm (1/2")
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 420 lpm (111 gpm)
against a discharge head of 2.8 bar (40 psig)
requires 4.8 bar (70 psig) and 110 Nm
3
/h
(65 scfm) air consumption.
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.
Caution: Do not exceed 8.6 bar (125 psig) air supply pressure.
PERFORMANCE

WIL-17100-E-03 15
CSA-Certified Pumps
GPS420/GPS430
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.
GPS820/GPS830
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.
SUCTION LIFT CAPABILITY

WIL-17100-E-03 16
CSA-Certified Pumps
GPS1520/GPS1530
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.
SUCTION LIFT CAPABILITY

WIL-17100-E-03 17
CSA-Certified Pumps
SECTION 6
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 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 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.
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.
Refer to the Wilden CE Safety Supplement, Safety Manual and EOM
Manual for additional information.
SUGGESTED INSTALLATION, OPERATION, MAINTENANCE
AND TROUBLESHOOTING

WIL-17100-E-03 18
CSA-Certified Pumps
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
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
Because each application is unique, maintenance schedules maybe
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.
SUGGESTED INSTALLATION, OPERATION, MAINTENANCE
AND TROUBLESHOOTING

WIL-17100-E-03 19
CSA-Certified Pumps
Troubleshooting
Pump will not run or runs slowly.
1. Remove plug from pilot spool exhaust.
2. 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).
3. Check air inlet filter for debris (see “Suggested Installation,
Operation, Maintenance and Troubleshooting”).
4. Check for extreme air leakage (blow by) that would indicate
worn seals/bores in the air valve, pilot spool and main shaft.
5. Disassemble the pump and check for obstructions in the air
passageways or objects that would obstruct the movement of
internal parts.
6. Check for sticking ball check valves.
a. If material being pumped is not compatible with pump
elastomers, swelling may occur. Replace ball check
valves and seals with proper elastomers.
b. Also, as the check valve balls wear out, they become
smaller and can become stuck in the seats. In this case,
replace balls and seats.
7. Check for any broken inner piston that would cause the air
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.
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.
a. If material being pumped is not compatible with pump
elastomers, swelling may occur. Replace ball check
valves and seals with proper elastomers.
b. 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 the compressed air.
a. Either install a dryer or a hot air generator for compressed
air.
b. Alternatively, you may use coalescing filter to remove the
water from the compressed air in some applications.
Air bubbles in pump discharge.
1. Check for a ruptured diaphragm.
2. Check tightness of outer pistons (see
“Disassembly/Reassembly”).
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 a diaphragm rupture.
2. Check the tightness of the outer pistons to the shaft.
SUGGESTED INSTALLATION, OPERATION, MAINTENANCE
AND TROUBLESHOOTING

WIL-17100-E-03 20
CSA-Certified Pumps
SECTION 7
PUMP DISASSEMBLY
Tools Required:
9/16" and 23 mm Socket Wrench
(GPS420/430)
1" Socket Wrench (GPS820/830)
9/16", 5/16" and 1-1/8" Socket
Wrench (GPS1520/1530)
Snap-Ring Pliers
Vise equipped with soft jaws
(such as plywood, plastic or other
suitable material)
CAUTION: Before attempting any maintenance or repair, disconnect the compressed
air line to the pump and allow all air pressure 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: Your specific pump model may vary from the configuration shown; however,
pump disassembly procedure will be the same.
NOTE: Replace worn parts with genuine Wilden parts for reliable performance.
Step 1 Step 2 Step 3
Before starting disassembly, mark a line
from each liquid chamber to its
corresponding air chamber. This line will
assist in proper alignment during
reassembly.
Using the appropriate-sized wrench,
loosen the discharge manifold from the
liquid chambers.
Lift the discharge manifold to expose
discharge valve balls and valve seats.
Inspect ball cage area of manifold for
excessive wear or damage.
DISASSEMBLY / REASSEMBLY