Dover PSG WILDEN PR870 Instruction Manual

WIL-11720-E-03
Where InnovationFlows
EOM
ENGINEERING OPERATION
& MAINTENANCE MANUAL
PR860/PR870
Bolted Metal Pump

WIL-11720-E-03 2
PR860/PR870 Bolted Metal
Copyright
Copyright 2023 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-11720-E-03 3
PR860/PR870 Bolted Metal
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.........................................................................................................9
PR860/PR870 Metal Rubber-Fitted.......................................................................9
PR860/PR870 Metal EZ-Install TPE-Fitted............................................................9
PR860/PR870 Metal Full-Stroke PTFE-Fitted......................................................10
PR860/PR870 Metal Reduced-Stroke PTFE-Fitted.............................................10
Suction Lift Capability..........................................................................................11
SECTION 6: Suggested Installation, Operation, Maintenance, and Troubleshooting........12
SECTION 7: Disassembly/Reassembly..................................................................................15
Pump Disassembly..............................................................................................15
Air Valve Disassembly.........................................................................................17
Reassembly Hints and Tips.................................................................................20
SECTION 8: Exploded View and Parts List ...........................................................................21
SECTION 9: Elastomer Options .............................................................................................23

WIL-11720-E-03 4
PR860/PR870 Bolted Metal
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 compressed air to the exhaust
port –pump will not function.
CAUTION: Do not over-lubricate air supply–excess
lubrication will reduce pump performance. Pump is pre-
lubed.
TEMPERATURE LIMITS:
Acetal
-29° C to82°C
-20° F to180° F
Buna-N
-12° C to82°C
10° F to 180° F
Geolast®
-40° C to82°C
-40° F to180° F
Neoprene
-18° C to93°C
0° F to 200° F
Nordel EPDM
-51° C to 138° C
-60° F to 280° F
Nylon
-18° C to93°C
0° F to 200° F
PFA
-7° C to 107° C
45° F to 225° F
Polypropylene
0° C to79°C
32° F to 175° F
Polyurethane
-12° C to66°C
10° F to150° F
PVDF
-12° C to 107° C
10° F to225° F
Saniflex
-29° C to 104° C
-20° F to220° F
SIPD PTFE with EPDM-backed
4° C to137° C
40° F to 280° F
SIPD PTFE with Neoprene-backed
4° C to93° C
40° F to200° F
PTFE*
4° C to104° C
40° F to220° F
FKM
-40° C to 177° C
-40° F to350° F
Wil-Flex
-40° C to 107° C
-40° F to225° F
*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. See “Wilden
Pump Designation System”for material options for your pump.
CAUTION: When choosing pump materials, be sure to
check the temperature limits for all wetted components.
Example: FKM has a maximum limit of 177° C (350° F),
but polypropylene has a maximum limit of only 79° C
(175° F).
CAUTION: Pump surfaces may exceed 80° C (176° F),
contact will result in burns, scalds, and other injuries.
Surface temperature is dependent on the temperature of
the process fluid.
CAUTION: Prevent static sparking. If static sparking
occurs, fire or explosion could result. Pump, valves and
containers must be grounded to a proper grounding point
when handling flammable fluids and whenever discharge
of static electricity is a hazard.
CAUTION: 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.
CAUTION: All Wilden pumps are capable of passing
solids. Use a strainer 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.
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.
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. Clean and/or sanitize FDA- and
USDA- approved pumps before using them.
CAUTION: Before attaching the air line to the pump, blow
out the air line for 10 to 20 seconds to make sure all
pipeline debris is clear. Use an in-line air filter. A 5µ
(micron) air filter is recommended.
CAUTION: Pro-Flo R pumps can be used in submersible
applications when using the Pro-Flo R submersible
option.
CAUTION: Before installation, tighten all hardware.
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.
PRECAUTIONS –READ FIRST!

WIL-11720-E-03 5
PR860/PR870 Bolted Metal
SECTION 2
MATERIAL CODES
MODEL
XPR860 = PRO-FLO®R ATEX
THREADED PORTS
XPR870 = PRO-FLO®R ATEX
FLANGED PORTS
(ANSI/DIN)
WETTED PATH
A = ALUMINUM
S = STAINLESS STEEL
OUTER PISTON
A = ALUMINUM
S = STAINLESS STEEL
AIR CHAMBER
A = ALUMINUM
CENTER BLOCK
A = ALUMINUM
AIR VALVE
A = ALUMINUM
DIAPHRAGMS
BNS = BUNA-N (RED DOT)
EPS = EPDM
NES = NEOPRENE (GREEN DOT)
TNU = PTFE w/NEOPRENE
BACKUP
TWS = FULL-STROKE PTFE
W/WIL-FLEX™BACK-UP
VTS = FKM (WHITE DOT)
ZWS = WIL-FLEX™EZ-INSTALL
[SANTOPRENE®(THREE
BLACK DOTS)]
VALVE BALLS
BN = BUNA-N (RED DOT)
EP = EPDM
NE = NEOPRENE (GREEN DOT)
TF = PTFE (WHITE)
VT = FKM (WHITE DOT)
WF = WIL-FLEX™[SANTOPRENE®
(THREE BLACK DOTS)]
VALVE SEATS
A = ALUMINUM
S = STAINLESS STEEL
BN = BUNA-N
EP = EPDM
NE = NEOPRENE
VT = FKM (WHITE DOT)
WF = WIL-FLEX™[SANTOPRENE®
(THREE BLACK DOTS)]
VALVE SEAT O-RINGS
TF = PTFE (WHITE)
SPECIALTY CODES
0014 BSPT
NOTE: Most elastomeric materials use colored dots for identification
NOTE: Not all models are available with all material options
PR860/PR870
METAL
LEGEND
XPR
860
/
X
X
X
X
X
/
X
X
X
/
X
X
/
X
X
X
/
X
X
X
X
51 mm (2") Pump
Maximum Flow Rate:
651 lpm (172 gpm)
O-RINGS
MODEL
VALVE SEATS
SPECIALTY
VALVE BALLS
CODE
DIAPHRAGMS
AIR VALVE
CENTER BLOCK
AIR CHAMBER
OUTER PISTON
WETTED PATHS
WILDEN PUMP DESIGNATION SYSTEM
(if applicable)