Wilden P820 Engineering Operation & Maintenance Manual
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Wilden P820 Engineering Operation & Maintenance Manual

Bolted metal pump
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EOM
ENGINEERING OPERATION
& MAINTENANCE MANUAL
P820/P830
Bolted Metal Pump
Where Innovation Flows
WIL-11590-E-04

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Summary of Contents for Wilden P820

  • Page 1 ENGINEERING OPERATION & MAINTENANCE MANUAL P820/P830 Bolted Metal Pump Where Innovation Flows WIL-11590-E-04...
  • 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.

  • Page 3: Table Of Contents

    P820/830 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 P820/P830 Metal Rubber-Fitted ........................ 9 P820/P830 Metal EZ-Install TPE-Fitted ....................

  • Page 4: Section 1: Precautions - Read First

    (See “Maximum Torque Specifications”). NOTE: Not all materials are available for all models. See “Wilden Pump Designation System” material options for your pump. NOTE: Some PTFE-fitted pumps come standard from the factory with expanded PTFE gaskets installed in the CAUTION: When choosing pump materials, be sure to diaphragm bead of the liquid chamber.

  • Page 5: Section 2: Wilden Pump Designation System

    P820/830 Bolted Metal SECTION 2 WILDEN PUMP DESIGNATION SYSTEM P820/830 METAL LEGEND P 820 / / X X X / X X / X X / X X X X 51 mm (2") Pump O-RING Maximum Flow Rate: MODEL VALVE SEAT...

  • 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

    P820/830 Bolted Metal SECTION 4 DIMENSIONAL DRAWING P820 Metal DIMENSIONS METRIC STANDARD ITEM (mm) (inch) 17.9 13.6 24.8 26.4 13.7 13.3 20.1 12.8 10.1 10.0 LW0369 REV. A P830 Metal DIMENSIONS METRIC ITEM STANDARD (inch) (mm) 17.8 15.3 26.6 29.6 29.8...
  • Page 8 P820/830 Bolted Metal DIMENSIONAL DRAWING P820 Stainless Steel DIMENSIONS METRIC STANDARD ITEM (mm) (inch) 17.8 14.0 24.4 25.9 14.0 13.3 20.1 12.0 10.0 10.0 LW0371 REV. A P830 Stainless Steel DIMENSIONS STANDARD ITEM METRIC (mm) (inch) 17.8 16.2 26.7 29.7 29.9...

  • Page 9: Section 5: Performance

    P820/830 Bolted Metal SECTION 5 PERFORMANCE P820/P830 METAL RUBBER-FITTED Ship Weights……………820 AL 47 kg (104 lb) 820 SS 73 kg (161 lb) 820 Iron 71 kg (156 lb) 830 AL 54 kg (118 lb) 830 SS 81 kg (178 lb) 830 Iron 82 kg (181 lb) Air Inlet……………………..……....1/2"...

  • Page 10: P820/P830 Metal Reduced-Stroke Ptfe-Fitted

    P820/830 Bolted Metal PERFORMANCE P820/P830 METAL REDUCED-STROKE PTFE-FITTED Ship Weights……………820 AL 47 kg (104 lb) 820 SS 73 kg (161 lb) 820 Iron 71 kg (156 lb) 830 AL 54 kg (118 lb) 830 SS 81 kg (178 lb) 830 Iron 82 kg (181 lb) Air Inlet……………………..……....1/2"...

  • Page 11: Suction Lift Capability

    P820/830 Bolted Metal SECTION 5 SUCTION LIFT CAPABILITY P820/P830 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 pumps are pre-lubricated and do not require in- line for preventing unscheduled pump downtime.

  • Page 14: Section 7: Disassembly/Reassembly

    P820/830 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

    (such as plywood, plastic or other NOTE: Your specific pump model may vary from the configuration shown; however, suitable material) pump disassembly procedure will be the same. NOTE: Replace worn parts with genuine Wilden parts for reliable performance. Step 1 Step 2 Step 3...
  • Page 16 P820/830 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 Inspect for wear and damaged components with genuine plywood, plastic or other suitable material) to replace if necessary. Wilden parts for reliable performance ensure shaft is not nicked, scratched or gouged. Using an adjustable wrench, remove diaphragm assembly form shaft.

  • Page 18: Air Valve Disassembly

    Be aware of any hazardous effects of contact  O-Ring Pick with your process fluid. NOTE: Replace worn parts with genuine Wilden parts for reliable performance. Step 1 Step 2 Step 3...
  • Page 19 P820/830 Bolted Metal 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...
  • Page 20 P820/830 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-11590-E-04...

  • Page 21: Reassembly Hints And Tips

    P820/830 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...

  • Page 22: Shaft Seal Installation

    P820/830 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

    P820/830 Bolted Metal SECTION 8 EXPLODED VIEW AND PARTS LIST P820/P830 METAL ALL CIRCLED PART IDENTIFIERS ARE INCLUDED IN REPAIR KITS WIL-11590-E-04...
  • Page 24 P820/830 Bolted Metal EXPLODED VIEW AND PARTS LIST P820/830/AAAPP/…/ P820/830/SSAPP/…/ P820/830/WWAPP/…/ 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")

  • Page 25: Section 9: Elastomer Options

    P820/830 Bolted Metal SECTION 9 ELASTOMER OPTIONS REDUCED FULL-STROKE FULL-STROKE REDUCED FULL-STROKE EZ-INSTALL STROKE DIAPHRAGM BACK-UP STROKE VALVE BALLS VALVE SEATS VALVE SEATS MATERIAL DIAPHRAGMS DIAPHRAGMS BACK-UP DIAPHRAGMS DIAPHRAGMS DIAPHRAGMS O-RING (4) DIAPHRAGMS Polyurethane 08-1022-50 08-1080-50 08-1128-50 Neoprene 08-1010-51 08-1060-51...
  • Page 26 P820/830 Bolted Metal NOTES WIL-11590-E-04...
  • Page 27 P820/830 Bolted Metal NOTES WIL-11590-E-04...
  • 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-11590-E-04...

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P830

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