Dover PSG Wilden Pro-Flo SHIFT PS420 Engineering Operation & Maintenance Manual

Dover PSG Wilden Pro-Flo SHIFT PS420 Engineering Operation & Maintenance Manual

Bolted metal pump

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ENGINEERING OPERATION
& MAINTENANCE MANUAL
PS420/PS430
Bolted Metal Pump
Where Innovation Flows
WIL-11500-E-11

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Summary of Contents for Dover PSG Wilden Pro-Flo SHIFT PS420

  • Page 1 ENGINEERING OPERATION & MAINTENANCE MANUAL PS420/PS430 Bolted Metal Pump Where Innovation Flows WIL-11500-E-11...
  • 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.
  • Page 3: Table Of Contents

    PS420/430 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 PS420/PS430 Metal Rubber-Fitted ......................9 PS420/PS430 Metal EZ-Install TPE-Fitted ....................
  • Page 4: Section 1: Precautions - Read First

    PS420/430 Bolted Metal SECTION 1 PRECAUTIONS – READ FIRST! WARNING: Always wear safety glasses when operating CAUTION: Before attempting any maintenance or repair, a pump to avoid eye injury. If diaphragm rupture occurs, disconnect the compressed air line to the pump and allow material being pumped may be forced out of the air all air pressure to bleed from the pump.
  • Page 5: Section 2: Wilden Pump Designation System

    PS420/430 Bolted Metal SECTION 2 WILDEN PUMP DESIGNATION SYSTEM PS420/430 METAL LEGEND XPS 420 / / X X X / X X / X X / X X X X 38 mm (1-1/2") Pump O-RINGS MODEL VALVE SEATS SPECIALTY Maximum Flow Rate: VALVE BALLS CODE (if applicable)
  • Page 6: Section 3: How It Works

    PS420/430 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

    PS420/430 Bolted Metal SECTION 4 DIMENSIONAL DRAWING PS420 METAL DIMENSIONS METRIC STANDARD ITEM (mm) (inch) 17.4 10.3 15.4 17.5 13.1 12.9 20.9 20.7 10.8 LW0231 REV. E PS420 METAL – VERTICAL PORT DIMENSIONS METRIC STANDARD ITEM (mm) (inch) 17.4 10.3 15.4 16.9 13.1...
  • Page 8 PS420/430 Bolted Metal DIMENSIONAL DRAWING PS430 METAL DIMENSIONS STANDARD ITEM METRIC (mm) (inch) 17.5 11.2 20.8 20.8 10.8 13.1 12.9 20.9 20.7 10.8 DIN (mm) ANSI (Inch) 150 DIA. 5.0 DIA. 109 DIA. 4.3 DIA. 16 DIA. 0.6 DIA LW0233 REV. D PS430 ALUMINUM DIMENSIONS METRIC...
  • Page 9: Section 5: Performance

    PS420/430 Bolted Metal SECTION 5 PERFORMANCE PS420/PS430 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 Flanged AL 28 kg (62 lb) 430 Flanged SS 53 kg (116 lb) 430 Flanged Iron 42 kg (92 lb) Air Inlet……………………………………….3/4"...
  • Page 10: Ps420/Ps430 Metal Full-Stroke Ptfe-Fitted

    PS420/430 Bolted Metal PERFORMANCE PS420/PS430 METAL FULL-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 Flanged AL 28 kg (62 lb) 430 Flanged SS 53 kg (116 lb) 430 Flanged Iron 42 kg (92 lb) Air Inlet……………………………………….3/4"...
  • Page 11: Suction Lift Capability

    PS420/430 Bolted Metal SUCTION LIFT CAPABILITY PS420/PS430 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

    PS420/430 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 PS420/430 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.
  • Page 14: Section 7: Disassembly/Reassembly

    PS420/430 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

    PS420/430 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 PS420/430 Bolted Metal DISASSEMBLY / REASSEMBLY Step 4 Step 5 Step 6 Remove the discharge valve balls and Using the appropriate-sized wrench, Remove the inlet manifold to expose the valve seats from the liquid chambers and loosen the inlet manifold from the liquid valve balls and valve seats.
  • Page 17 PS420/430 Bolted Metal DISASSEMBLY / REASSEMBLY Step 10 Step 11 Step 12 Inspect the diaphragm assembly for wear, To remove the diaphragm assembly from Remove outer piston and stud if damage or chemical attack. Replace any shaft, secure shaft with soft jaws equipped.
  • Page 18: Air Valve/Center Section Disassembly

    PS420/430 Bolted Metal DISASSEMBLY / REASSEMBLY AIR VALVE / CENTER SECTION 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"...
  • Page 19 PS420/430 Bolted Metal DISASSEMBLY / REASSEMBLY Step 7 Step 8 Step 9 Gently remove the pilot spool from the Remove the modulator spool from Using the appropriate-sized wrench, sleeve and inspect for nicks, wear or the center section. Check for wear to the loosen the fasteners and lift away damage.
  • Page 20 PS420/430 Bolted Metal DISASSEMBLY / REASSEMBLY Step 13 Step 14 Loosen and remove the four (4) air valve bolts from the center section assembly. Remove the air valve end cap to expose the air valve spool by lifting up on the end cap. Lift the muffler plate and muffler plate gasket away from the center block.
  • Page 21: Single-Point Exhaust

    PS420/430 Bolted Metal DISASSEMBLY / REASSEMBLY SINGLE-POINT EXHAUST Step 1 Step 2 Remove the pilot exhaust muffler in the pilot Optional: Install a single-point exhaust gasket (04-2639-52). The single-point air valve bleed port located at the front of the center gasket can be purchased as a spare part or included with the purchase of a new block.
  • Page 22 PS420/430 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

    PS420/430 Bolted Metal SECTION 8 EXPLODED VIEW AND PARTS LIST PS420/PS430 METAL FULL FLOW PTFE FULL-STROKE IPD STAINLESS STEEL AND DUCTILE IRON FLANGED ALUMINUM FLANGED VERTICAL PORT METAL ADS PLASTIC ADS LW0021 REV. L ALL CIRCLED PART IDENTIFIERS ARE INCLUDED IN REPAIR KITS WIL-11500-E-11...
  • Page 24 PS420/430 Bolted Metal EXPLODED VIEW AND PARTS LIST XPS420/430/ XPS420/430/ PS420/430/ XPS420/430/ XPS420/430/ PS420/430/ Model Description SSAAA/…/ SSSSS/…/ SSSPP/…/ AAAAA/…/ WMAAA/…/ WMAPP/…/ Item Description Qty. Air Distribution Components Air Valve Assembly, Pro-Flo Shift 04-2039-01 04-2039-03 04-2039-20 04-2039-01 04-2039-01 04-2039-20 ® O-Ring, End Cap (-225, Ø1.859"...
  • Page 25: Section 9: Elastomer Options

    PS420/430 Bolted Metal SECTION 9 ELASTOMER OPTIONS FULL-STROKE FULL-STROKE FULL-STROKE EZ-INSTALL VALVE SEAT DIAPHRAGM BACK-UP VALVE BALLS VALVE SEATS MATERIAL DIAPHRAGMS DIAPHRAGMS O-RING DIAPHRAGMS DIAPHRAGMS Polyurethane 04-1022-50 08-1080-62-50 04-1128-50 Neoprene 04-1010-51 08-1080-51-50 04-1128-51 Buna-N 04-1010-52 08-1080-52-50 04-1128-52 Geolast 04-1022-15 EPDM 04-1010-54 08-1080-54-50 04-1128-54...
  • Page 26 PS420/430 Bolted Metal NOTES WIL-11500-E-11...
  • Page 27 PS420/430 Bolted Metal NOTES WIL-11500-E-11...
  • 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-11...

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