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Summary of Contents for Dover PSG Wilden Pro-Flo P420
- Page 1 ENGINEERING OPERATION & MAINTENANCE MANUAL P420/P430 Bolted Metal Pump Where Innovation Flows WIL-11580-E-04...
- Page 2 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.
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Page 3: Table Of Contents
P420/430 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 P420/P430 Metal Rubber-Fitted ........................ 9 P420/P430 Metal EZ-Install TPE-Fitted .................... -
Page 4: Section 1: Precautions - Read First
P420/430 Bolted Metal SECTION 1 PRECAUTIONS – READ FIRST! WARNING: Always wear safety glasses when operating CAUTION: Thoroughly flush pumps before installing a pump to avoid eye injury. If diaphragm rupture occurs, them into process lines. Clean and/or sanitize FDA- and material being pumped may be forced out of the air USDA- approved pumps before using them. -
Page 5: Section 2: Wilden Pump Designation System
P420/430 Bolted Metal SECTION 2 WILDEN PUMP DESIGNATION SYSTEM P420/430 METAL LEGEND P 420 / / X X X / X X / X X / X X X X 38 mm (1-1/2") Pump O-RING Maximum Flow Rate: MODEL VALVE SEAT SPECIALTY 492 lpm (130 gpm) VALVE BALL... -
Page 6: Section 3: How It Works
P420/430 Bolted Metal SECTION 3 HOW IT WORKS – AIR-OPERATED DOUBLE-DIAPHRAGM 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. FIGURE 1 The air valve directs pressurized air to FIGURE 2 When the pressurized diaphragm, FIGURE 3 At completion of the stroke, the air... -
Page 7: Section 4: Dimensional Drawings
P420/430 Bolted Metal SECTION 4 DIMENSIONAL DRAWING P420 Metal DIMENSIONS METRIC STANDARD ITEM (mm) (inch) 17.4 15.4 17.5 11.5 15.1 10.8 LW0375 REV. B P420 Metal – Vertical DIMENSIONS METRIC STANDARD ITEM (mm) (inch) 17.4 15.4 16.9 11.5 15.1 10.8 LW0376 REV. - Page 8 P420/430 Bolted Metal DIMENSIONAL DRAWING P430 Aluminum DIMENSIONS METRIC STANDARD ITEM (mm) (inch) 17.4 12.3 20.9 23.4 23.9 11.5 15.1 12.3 DIN (mm) ANSI (mm) 150 DIA. 5.0 DIA. 109 DIA. 3.9 DIA. 18 DIA. 0.6 DIA. LW0377 REV. B P430 Metal DIMENSIONS STANDARD...
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Page 9: Section 5: Performance
P420/430 Bolted Metal SECTION 5 PERFORMANCE P420/P430 METAL RUBBER-FITTED Ship Weights…420 Threaded AL 26 kg (57 lb) 420 Threaded SS 50 kg (111 lb) 420 Threaded Iron 39 kg (86 lb) 430 Threaded AL 28 kg (62 lb) 430 Threaded SS 53 kg (92 lb) 430 Threaded Iron 42 kg (92 lb) Air Inlet……………………..……..19 mm (3/4") Inlet…...……………...………….38 mm (1-1/2") -
Page 10: P420/P430 Metal Reduced-Stroke Ptfe-Fitted
P420/430 Bolted Metal PERFORMANCE P420/P430 METAL REDUCED-STROKE PTFE-FITTED Ship Weights…420 Threaded AL 26 kg (57 lb) 420 Threaded SS 50 kg (111 lb) 420 Threaded Iron 39 kg (86 lb) 430 Threaded AL 28 kg (62 lb) 430 Threaded SS 53 kg (92 lb) 430 Threaded Iron 42 kg (92 lb) Air Inlet…………………..………..19 mm (3/4") Inlet…...……………...………….38 mm (1-1/2") -
Page 11: Suction Lift Capability
P420/430 Bolted Metal SECTION 5 SUCTION LIFT CAPABILITY P420/P430 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. -
Page 12: Section 6: Suggested Installation, Operation, Maintenance, And Troubleshooting
P420/430 Bolted Metal SECTION 6 SUGGESTED INSTALLATION, OPERATION, MAINTENANCE AND TROUBLESHOOTING Wilden pumps are designed to meet the performance requirements of be eliminated. In addition, pump efficiency can be adversely even the most demanding pumping applications. They have been affected if proper attention is not given to site location. designed and manufactured to the highest standards and are ... - Page 13 P420/430 Bolted Metal SUGGESTED INSTALLATION, OPERATION, MAINTENANCE AND TROUBLESHOOTING to control the pump from a remote location. When the pump discharge pressure equals or exceeds the air supply pressure, the NOTE: In the event of a power failure, close the shut- pump will stop.
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Page 14: Section 7: Disassembly/Reassembly
P420/430 Bolted Metal SUGGESTED INSTALLATION, OPERATION, MAINTENANCE AND TROUBLESHOOTING Troubleshooting Pump air valve freezes. Pump will not run or runs slowly. Check for excessive moisture in the compressed air. Remove plug from pilot spool exhaust. Either install a dryer or a hot air generator for compressed Ensure that the air inlet pressure is at least 0.4 bar (5 psig) air. -
Page 15: Pump Disassembly
P420/430 Bolted Metal SECTION 7 DISASSEMBLY / REASSEMBLY PUMP DISASSEMBLY Tools Required: 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 9/16"... - Page 16 P420/430 Bolted Metal DISASSEMBLY / REASSEMBLY Step 4 Step 5 Step 6 Remove the discharge valve balls, seats Using the appropriate-sized wrench, Remove the inlet manifold to expose the and valve seat O-rings from the discharge loosen the inlet manifold from the liquid valve balls and valve seats.
- Page 17 P420/430 Bolted Metal DISASSEMBLY / REASSEMBLY Step 10 Step 11 After loosening and removing the outer To remove the remaining diaphragm piston the diaphragm assembly can be assembly from the shaft, secure shaft with disassembled. soft jaws (a vise fitted with plywood or other suitable material) to ensure shaft is not nicked, scratched, or gouged.
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Page 18: Air Valve Disassembly
P420/430 Bolted Metal DISASSEMBLY / REASSEMBLY AIR VALVE DISASSEMBLY Tools Required: 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 3/16" Hex-Head Wrench intake, discharge, and air lines. - Page 19 P420/430 Bolted Metal DISASSEMBLY / REASSEMBLY DISASSEMBLY / REASSEMBLY Step 4 Step 5 Step 6 Remove air valve end cap to expose air Remove air valve spool from air valve Remove pilot spool sleeve retaining snap valve spool by simply lifting up on end body by threading one air valve bolt into ring on both sides of center section with cap once air valve bolts are removed.
- Page 20 P420/430 Bolted Metal DISASSEMBLY / REASSEMBLY Step 9 Check center section seals for signs of wear. If necessary, remove seals with O-ring pick and replace. WIL-11580-E-04...
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Page 21: Reassembly Hints And Tips
P420/430 Bolted Metal DISASSEMBLY / REASSEMBLY REASSEMBLY HINTS AND TIPS Upon performing applicable maintenance to the air distribution system, Maximum Torque Specifications the pump can now be reassembled. Please refer to the disassembly instructions for photos and parts placement. Description Torque Air Valve 5.1 N⋅m (45 in-lb) -
Page 22: Shaft Seal Installation
P420/430 Bolted Metal DISASSEMBLY / REASSEMBLY SHAFT SEAL INSTALLATION Pre-Installation Tools After all the old seals have been removed, the inside of the bushing The following tools can be used to aid in the installation of should be cleaned to ensure no debris is left that may cause premature the new seals: damage to the new seals. -
Page 23: Section 8: Exploded View And Parts List
P420/430 Bolted Metal SECTION 8 EXPLODED VIEW AND PARTS LIST P420/P430 METAL ALL CIRCLED PART IDENTIFIERS ARE INCLUDED IN REPAIR KITS WIL-11580-E-04... - Page 24 P420/430 Bolted Metal EXPLODED VIEW AND PARTS LIST P420/430/AAAPP/…/ P420/430/SSAPP/…/ P420/430/WMAPP/…/ Item Description Qty. Air Distribution Components Air Valve Assembly, Pro-Flo 04-2000-20-700 ® 1 O-Ring, End Cap (-225, Ø1.859" x Ø.139") 04-2390-52-700 End Cap, Pro-Flo 04-2330-20-700 ® Screw, SHC, Air Valve (1/4"-20 x 4-1/2") 01-6000-03 Screw, Self Tapping, SHC (10-16 x 1 3/4") 04-6351-03...
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Page 25: Section 9: Elastomer Options
P420/430 Bolted Metal SECTION 9 ELASTOMER OPTIONS REDUCED- FULL-STROKE FULL-STROKE REDUCED FULL-STROKE EZ-INSTALL STROKE DIAPHRAGM BACK-UP STROKE VALVE BALLS VALVE VALVE SEATS MATERIAL DIAPHRAGMS DIAPHRAGMS BACK-UP DIAPHRAGMS DIAPHRAGMS DIAPHRAGMS SEATS (4) O-RING (4) DIAPHRAGMS Polyurethane 04-1022-50 08-1080-62-50 04-1128-50 Neoprene 04-1010-51 04-1060-51 08-1080-51-50 04-1128-51... - Page 26 P420/430 Bolted Metal NOTES WIL-11580-E-04...
- Page 27 P420/430 Bolted Metal NOTES WIL-11580-E-04...
- Page 28 P: +1 (909) 422 -1730 psgdover.com Where Innovation Flows ® ® Copyright 2021 PSG , a Dover Company ® reserves the right to modify the information and illustrations contained in this document without prior notice. This is a non-contractual document. WIL-11500-E-10...
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