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Summary of Contents for Wilden PS420
- Page 1 ENGINEERING OPERATION & MAINTENANCE MANUAL PS420/PS430 Bolted Metal Pump Where Innovation Flows WIL-11500-E-11...
- Page 2 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.
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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
NOTE: When installing PTFE diaphragms, it is important to tighten outer pistons simultaneously (turning in NOTE: Not all materials are available for all models. See “Wilden opposite directions) to ensure tight fit. (See “Maximum Pump Designation System” for material options for your 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:... -
Page 6: Section 3: How It Works
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. -
Page 7: Section 4: Dimensional Drawings
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 12.9 20.9 20.7 10.8 LW0232 REV. F... - 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...
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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…………………………….19 mm (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…………………………….19 mm (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
The suction pipe size should be at least equal to or larger than the elbows, bends and fittings should be avoided. Pipe sizes should diameter size of the suction inlet on your Wilden pump. The suction be selected to keep friction losses within practical limits. All piping hose must be a non-collapsible, reinforced type because these should be supported independently of the pump. - Page 13 Frequency of use, line pressure, viscosity and abrasiveness of process fluid all affect the parts life of a Wilden Operation pump. Periodic inspections have been found to offer the best means The Pro-Flo SHIFT pumps are pre-lubricated and do not require in- for preventing unscheduled pump downtime.
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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) -
Page 15: Pump Disassembly
NOTE: Your specific pump model may vary from the configuration shown; however, (such as plywood, plastic or other pump disassembly procedure will be the same. suitable material) NOTE: Replace worn parts with genuine Wilden parts for reliable performance. Step 1 Step 2 Step 3... - Page 16 Remove the chemical attack or abrasive wear. diaphragm assembly from the center Replace worn parts with genuine Wilden section. Repeat for opposite side. parts for reliable performance. WIL-11500-E-11...
- Page 17 Inspect for wear and replace if damaged components with genuine (aluminum, plastic, or plywood) to ensure necessary. Wilden parts for reliable performance. the shaft is not damaged. Using an adjustable wrench, remove the diaphragm assembly from the shaft. WIL-11500-E-11...
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Page 18: Air Valve/Center Section Disassembly
Snap-Ring Pliers with your process fluid. O-Ring Pick NOTE: Replace worn parts with genuine Wilden parts for reliable performance. Step 1 Step 2 Step 3 Using a pair of snap-ring pliers, remove Using an O-ring pick, remove the O-ring Using the appropriate-sized wrench, the snap ring from the pilot sleeve. - 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.
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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.
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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... - 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 ®...
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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... - Page 26 PS420/430 Bolted Metal NOTES WIL-11500-E-11...
- Page 27 PS420/430 Bolted Metal NOTES WIL-11500-E-11...
- Page 28 22069 Van Buren Street Grand Terrace, CA 92313-5651 USA 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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