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Dover PSG Wilden P4 Engineering Operation & Maintenance Manual Download Page 8

 

WIL-10160-E-11  

8 

P4 Clamped Plastic 

 

SECTION 5 

 

 

P4 PLASTIC 
RUBBER-FITTED

 

 
 
 
 
 
 
 

 
 
 
 
 
 
 
 
 
 

 

Ship Weights…..Polypropylene 16.8 kg (37 lb) 

PVDF 21.3 kg (47 lb) 

Air Inlet……………………..……..13 mm (1/2") 

Inlet…...…………………...……38 mm (1-1/2") 

Outlet………………...………….38 mm (1-1/2") 

Suction Lift……………………...4.8 m Dry (16') 

7.92 m Wet (26') 

Disp. per Stroke

1

……...…....1.19 L (0.314 gal) 

Max. Flow Rate……………..348 lpm (92 gpm) 

Max. Size Solids…………………3.2 mm (1/8") 

 

1

Displacement per stroke was calculated at 4.8 

bar (70 psig) air inlet pressure against a 2.1 bar 

(30 psig) head pressure. 

 

Example:

 

To pump 159 lpm (40 gpm) against a 

discharge pressure head of 2.7 bar (40 psig) 

requires 4.1 bar (60 psig) and 30.6 Nm

3

/h (18 

scfm) air consumption.

 

Flow rates indicated on chart were determined by pumping water. For optimum life and performance, pumps 
should be specified so that daily operation parameters will fall in the center of the pump's performance curve. 
 

Caution: Do not exceed 8.6 bar (125 psig) air supply pressure. 

 
 

 

 

P4 PLASTIC 
TPE-FITTED

 

 

 

Ship Weights…..Polypropylene 16.8 kg (37 lb) 

PVDF 21.3 kg (47 lb) 

Air Inlet……………………..……..13 mm (1/2") 

Inlet…...…………………...……38 mm (1-1/2") 

Outlet………………...………….38 mm (1-1/2") 

Suction Lift…………………….3.96 m Dry (13') 

7.92 m Wet (26') 

Disp. per Stroke

1

……...…....1.18 L (0.311 gal) 

Max. Flow Rate……………..354 lpm (94 gpm) 

Max. Size Solids…………….…4.8 mm (3/16") 

 

1

Displacement per stroke was calculated at 4.8 

bar (70 psig) air inlet pressure against a 2.1 bar 

(30 psig) head pressure. 

 

 

Example:

 To pump 42 gpm (159 lpm) against 

a discharge pressure head of 2.7 bar (40 
psig) requires 4.1 bar (60 psig) and 34 Nm

3

/h 

(20 scfm) air consumption. 

 

 

 

Flow rates indicated on chart were determined by pumping water. For optimum life and performance, pumps 
should be specified so that daily operation parameters will fall in the center of the pump's performance curve. 
 

Caution: Do not exceed 8.6 bar (125 psig) air supply pressure.

 

 

 

 

DIMENSIONAL DRAWING 

PERFORMANCE 

Summary of Contents for PSG Wilden P4

Page 1: ...WIL 10160 E 11 Where InnovationFlows EOM ENGINEERING OPERATION MAINTENANCE MANUAL P4 Clamped Plastic Pump ...

Page 2: ...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 pe...

Page 3: ...Fitted 8 P4 Plastic TPE Fitted 8 P4 Plastic Reduced Stroke PTFE Fitted 9 P4 Plastic Full Stroke PTFE Fitted 9 Suction Lift Capability 10 SECTION 6 Suggested Installation Operation Maintenance and Troubleshooting 11 SECTION 7 Disassembly Reassembly 14 Pump Disassembly 14 Air Valve Disassembly 17 Reassembly Hints and Tips 20 Gasket Kit Installation 22 SECTION 8 Exploded View and Parts List 23 SECTIO...

Page 4: ... the pump s rated solids capacity is not exceeded CAUTION Do not exceed 8 6 bar 125 psig air supply pressure CAUTION The process fluid and cleaning fluids must be chemically compatible with all wetted pump components Consult Chemical Resistance Guide CAUTION Thoroughly flush pumps before installing them into process lines Clean and or sanitize FDA and USDA approved pumps before using them CAUTION ...

Page 5: ...KM SPECIALTY CODES 0100 Wil Gard II 110V 0102 Wil Gard II sensor wires ONLY 0103 Wil Gard II 220V 0206 PFA coated hardware Wil Gard II sensor wires ONLY 0502 PFA coated hardware 0504 DIN flange 0506 DIN flange PFA coated hardware 0512 Adapter block no muffler Pro Flo center section 0513 SS outer pistons 0560 Split manifold 0561 Split manifold PFA coated hardware 0563 Split manifold discharge ONLY ...

Page 6: ...nd manifold of the pump These same hydraulic forces lift the discharge valve ball off its seat while the opposite discharge valve ball is forced onto its seat forcing fluid to flow through the pump discharge The movement of diaphragm A toward the center of the pump creates a vacuum within liquid chamber A Atmospheric pressure forces fluid into the inlet manifold of the pump The inlet valve ball is...

Page 7: ...94 15 5 B 79 3 1 C 287 11 3 D 465 18 3 E 528 20 8 F 122 4 8 G 287 11 3 H 300 11 8 J 137 5 4 K 287 11 3 L 236 9 3 M 180 7 1 N 203 8 0 P 10 0 4 DIN FLANGE R 109 DIA 4 3 DIA S 150 DIA 5 9 DIA T 18 DIA 0 7 DIA ANSI FLANGE R 99 DIA 3 9 DIA S 127 DIA 5 0 DIA T 20 DIA 0 8 DIA LW0496 REV A DIMENSIONAL DRAWING ...

Page 8: ...fall in the center of the pump s performance curve Caution Do not exceed 8 6 bar 125 psig air supply pressure P4 PLASTIC TPE FITTED Ship Weights Polypropylene 16 8 kg 37 lb PVDF 21 3 kg 47 lb Air Inlet 13 mm 1 2 Inlet 38 mm 1 1 2 Outlet 38 mm 1 1 2 Suction Lift 3 96 m Dry 13 7 92 m Wet 26 Disp per Stroke1 1 18 L 0 311 gal Max Flow Rate 354 lpm 94 gpm Max Size Solids 4 8 mm 3 16 1Displacement per s...

Page 9: ...ameters will fall in the center of the pump s performance curve Caution Do not exceed 8 6 bar 125 psig air supply pressure P4 PLASTIC FULL STROKE PTFE FITTED Ship Weights Polypropylene 16 8 kg 37 lb PVDF 21 3 kg 47 lb Air Inlet 13 mm 1 2 Inlet 38 mm 1 1 2 Outlet 38 mm 1 1 2 Suction Lift 4 7m Dry 15 3 9 3 m Wet 30 6 Disp per Stroke1 1 0 L 27 gal Max Flow Rate 352 lpm 92 9 gpm Max Size Solids 4 8 mm...

Page 10: ... 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 The number of intake and discharge elbows viscosity of pumping fluid elevation atmospheric pressure and pipe friction loss all affect the amount of suction lift your pump will attain SUCTION LIFT CAPABILITY ...

Page 11: ... strokes per minute and then multiplying that figure by the displacement per stroke Muffler Using the standard Wilden muffler sound levels are reduced below OSHA specifications You can use other mufflers to reduce sound levels farther but they usually reduce pump performance Elevation Selecting a site that is well within the pump s dynamic lift capability will assure that loss of prime issues will...

Page 12: ...ed to regulate volume Pump discharge rate also can be controlled by throttling the pump discharge by partially closing a valve in the discharge line of the pump This action increases friction loss which reduces flow rate See Performance This is useful when the need exists to control the pump from a remote location When the pump discharge pressure equals or exceeds the air supply pressure the pump ...

Page 13: ...be unable to shift Pump runs but little or no product flows 1 Check for pump cavitation Slow pump speed down to allow thick material to flow into liquid chambers 2 Verify that vacuum required to lift liquid is not greater than the vapor pressure of the material being pumped cavitation 3 Check for sticking ball check valves a If material being pumped is not compatible with pump elastomers swelling ...

Page 14: ...el may vary from the configuration shown however pump disassembly procedure will be the same NOTE The model used for these instructions incorporates rubber diaphragms balls and seats Models with PTFE diaphragms balls and seats are the same except where noted NOTE Replace worn parts with genuine Wilden parts for reliable performance Step 1 Step 2 Step 3 Before starting disassembly mark a line from ...

Page 15: ...ng the pump will facilitate removal of inlet manifold Lift intake manifold from liquid chambers and center section to expose intake valve balls and seats Inspect ball cage area of liquid chambers for excessive wear or damage Step 7 Step 8 Step 9 Remove valve seats and valve balls for inspection Replace if necessary Remove small manifold clamp bands to inspect manifold O rings Remove one set of lar...

Page 16: ...o the shaft and the entire assembly can be removed from the center section Figure 12 2 The outer piston diaphragm and inner piston separate from the shaft which remains connected to the opposite side diaphragm assembly Figure 13 Repeat disassembly instructions for the opposite liquid chamber Inspect diaphragm assembly and shaft for signs of wear or chemical attack Replace all worn parts with genui...

Page 17: ...uired 3 16ʺ Hex Head Wrench 1 4ʺ Hex Head Wrench Snap Ring Pliers O Ring Pick 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 eff...

Page 18: ...f center section with snap ring pliers NOTE Seals should not be removed from assembly Seals are not sold separately Remove pilot spool retaining snap ring on both sides of center section with snap ring pliers Step 7 Step 8 Remove air chamber bolts with 1 4 hex head wrench Remove pilot spool bushing from center block NOTE Seals should not be removed from assembly Seals are not sold separately DISAS...

Page 19: ...ary During re assembly never insert the pilot spool into the sleeve with the notched end first this end incorporates the urethane O ring and will be damaged as it slides over the ports cut in the sleeve NOTE Seals should not be removed from assembly Seals are not sold separately Check center block Glyd rings for signs of wear If necessary remove Glyd rings with O ring pick and replace NOTE Threade...

Page 20: ...ent Clean the inside of the center section shaft bore to ensure no damage is done to new shaft seals A small amount of NLGI grade 2 white EP bearing grease can be applied to the muffler and air valve gaskets to locate gaskets during assembly Make sure that the exhaust port on the muffler plate is centered between the two exhaust ports on the center section Stainless bolts should be lubed to reduce...

Page 21: ...With the seal clamped in the pliers insert the seal into the busing bore and position the bottom of the seal into the correct groove When the bottom of the seal is seated in the groove release the clamp pressure on the pliers This will allow the seal to partially snap back to its original shape 6 After removing the pliers you will notice a slight bump in the seal shape Before the seal can be resiz...

Page 22: ...adhesive covering from the back of the PTFE tape Ensure that the adhesive strip remains attached to the PTFE tape Starting at any point place the PTFE tape in the center of the diaphragm bead groove on the liquid chamber and press lightly on the tape to ensure that the adhesive holds in place during assembly Do not stretch the tape during placement in the center of diaphragm bead groove The end of...

Page 23: ...WIL 10160 E 11 23 P4 Clamped Plastic SECTION 8 P4 FULL STROKE EXPLODED VIEW AND PARTS LIST ALL CIRCLED PART IDENTIFIERS ARE INCLUDED IN REPAIR KITS ...

Page 24: ... 19 Retaining Ring 2 04 3890 03 04 3890 03 04 3890 03 04 3890 03 20 Inner Piston 2 04 3700 01 700 04 3700 01 700 04 3700 01 700 04 3700 01 700 21 Diaphragm 2 22 Outer Piston 2 04 4550 20 500 04 4550 21 500 04 4550 20 500 04 4550 21 500 23 Valve Seat 4 04 1120 20 500 04 1120 21 500 04 1120 20 500 04 1120 21 500 24 Valve Seat O Ring 2 609 x 139 4 25 Valve Ball 4 26 Chamber Liquid 2 04 5000 20 04 500...

Page 25: ...WIL 10160 E 11 25 P4 Clamped Plastic P4 PLASTIC REDUCED STROKE EXPLODED VIEW AND PARTS LIST ALL CIRCLED PART IDENTIFIERS ARE INCLUDED IN REPAIR KITS ...

Page 26: ...4 3890 03 04 3890 03 04 3890 03 20 Inner Piston 2 04 3752 01 04 3752 01 04 3752 01 04 3752 01 21 Back up Diaphragm 2 22 Diaphragm PTFE 2 04 1010 55 04 1010 55 04 1010 55 04 1010 55 23 Outer Piston 2 04 4600 20 500 04 4600 21 500 04 4600 20 500 04 4600 21 500 24 Valve Seat 4 04 1120 20 500 04 1120 21 500 04 1120 20 500 04 1120 21 500 25 Valve Seat O Ring 2 609 x 139 4 04 1200 60 500 04 1200 60 500 ...

Page 27: ...3 N A N A N A N A N A EPDM 04 1010 54 04 1080 54 N A N A N A N A N A Reduced Stroke PTFE 04 1010 55 04 1080 55 N A N A N A N A N A Full Stroke PTFE 04 1040 55 04 1080 55 N A N A N A N A N A PTFE PFA N A N A 04 1120 22 500 N A N A N A N A PTFE ENCAP FKM N A N A N A 04 1200 60 500 04 1300 60 500 N A N A Polyurethane 04 1010 50 04 1080 50 N A 04 1200 50 500 04 1300 50 500 N A N A Saniflex 04 1010 56 ...

Page 28: ... USA P 1 909 422 1730 psgdover com Copyright 2021 PSG a Dover Company PSG reserves the right to modify the information and illustrations contained in this document without prior notice This is a non contractual document WIL 10160 E 11 Where InnovationFlows ...

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