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Dover PSG Wilden PRO-FLO P4 Series, Engineering, Operation & Maintenance

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Dover PSG Wilden PRO-FLO P4 Series Engineering, Operation & Maintenance Download Page 18

 

 

WIL-10183-E-03

 

Wilden

®

 

18 

Disassembly / Reassembly 

 

Air Valve / Center Section Disassembly 

Tools Required: 

 

•

 

3/16" Hex-Head 
Wrench 

•

 

1/4" Hex-Head 
Wrench 

•

 

Snap-Ring Pliers 

•

 

O-Ring Pick 

CAUTION: 

Before any maintenance or repair is attempted, the compressed air line to the pump 

should be disconnected and all air pressure allowed 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 hazardous effects of contact with your process fluid. 

The  Wilden  P4  metal  pump  utilizes  a  revolutionary  Pro-Flo

®

  air  distribution  system.  Proprietary 

composite seals reduce the coefficient of friction and allow the P4 to run lube-free. The Pro-Flo

®

 air 

distribution system is designed to perform in on/off, non-freezing, non-stalling, tough duty applications. 

 

 

 
 
 

 
 
 

 
 

 
 
 

 
 
 
 
 

 
 
 

 
 

 
 

 

Step 1

 

Loosen the air valve bolts utilizing a 

3/16" hex-head wrench and then 
remove muffler plate screws.

 

Step 2

 

Remove muffler plate and air valve 

bolts from air valve assembly 
exposing muffler gasket for 

inspection. Replace, if necessary.

 

Step 3

 

Lift away air valve assembly and 

remove air valve gasket for inspection. 
Replace, if necessary.

 

 

Summary of Contents for PSG Wilden PRO-FLO P4 Series

Page 1: ...EOM ENGINEERING OPERATION MAINTENANCE P4 Clamped Metal Pump WIL 10183 E 03 Where InnovationFlows ...

Page 2: ...l Stroke PTFE Fitted 9 P4 Metal Ultra Flex Fitted 10 Suction Lift Curves 11 Section 6 Suggested Installation Operation 12 Maintenance and Troubleshooting Section 7 Disassembly Reassembly 15 Pump Disassembly 15 Air Valve Center Section Disassembly 18 Reassembly Hints Tips 21 Gasket Kit Installation 23 Section 8 Exploded View and Parts List 24 P4 Metal Full Stroke Diaphragm Fitted 24 P4 Metal Reduce...

Page 3: ...lifornia 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 perm...

Page 4: ... Pump valves and containers must be grounded to a proper grounding point when handling flammable fluids and whenever discharge of static electricity is a hazard CAUTION All Wilden pumps are capable of passing solids Usea strainer onthepumpintaketoensurethatthe pump s rated solids capacityisnotexceeded CAUTION Donotexceed8 6bar 125psig air supply pressure CAUTION Theprocess fluidandcleaningfluidsmu...

Page 5: ...S STAINLESS STEEL VALVE SEAT O RINGS A ALUMINUM BN BUNA N Red Dot FS SANIFLEX Hytrel Cream 1 3 H ALLOY C M MILD STEEL EP EPDM Blue Dot NE NEOPRENE Green Dot PU POLYURETHANE Clear S STAINLESS STEEL VT FKM Silver or White Dot WF WIL FLEX Santoprene VALVE SEAT O RINGS TF PTFE 1 2 3 SPECIALTY CODES 0014 BSP 0023 Wing nuts 0023 Wing nuts 0030 Screen based 0036 Screen based BSP 0044 Stallion balls seats...

Page 6: ...chamber and mani fold 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 block of the pump creates a vacuum within liquid chamber A Atmospheric pressure forces fluid into the inlet manifold of the pump The inl...

Page 7: ...8 3 H 262 10 3 J 224 8 8 K 150 5 9 L 178 7 0 M 51 2 0 N 10 0 4 P 338 13 3 R 224 8 8 S 155 6 1 T 193 7 6 U 48 1 9 V 13 0 5 W 91 3 6 LW0338 REV A DIMENSIONS ITEM METRIC mm STANDARD inch A 396 15 6 B 64 2 5 C 206 8 1 D 422 17 4 E 91 3 6 F 138 5 4 G 320 12 6 H 211 8 3 J 262 10 3 K 224 8 8 L 152 6 0 M 178 7 0 N 69 2 7 P 10 0 4 LW0339 REV A DIMENSIONAL DRAWING Section 4 ...

Page 8: ...umps should be specified so that daily operation parameters will fall in the center of the pump s performance curve P4 METAL TPE FITTED ShipWeight Aluminum 13 kg 29 lb 316 Stainless Steel 20 kg 45 lb Cast Iron 22 kg 49 lb Alloy C 23 kg 51 lb Air Inlet 19 mm 3 4 Inlet 38 mm 1 1 2 Outlet 32 mm 1 1 4 Suction Lift 5 2 m Dry 17 0 8 8 m Wet 29 0 Disp Per Stroke1 1 1 L 0 29 gal Max Flow Rate 307 lpm 81 g...

Page 9: ...mance pumps should be specified so that daily operation parameters will fall in the center of the pump s performance curve P4 METAL FULL STROKE PTFE FITTED ShipWeight Aluminum 13 kg 29 lb 316 Stainless Steel 20 kg 45 lb Cast Iron 22 kg 49 lb Alloy C 23 kg 51 lb Air Inlet 13 mm 1 2 Inlet 38 mm 1 1 2 Outlet 32 mm 1 1 4 Suction Lift 6 4m Dry 21 0 9 3 m Wet 30 6 Disp Per Stroke1 1 1 L 28 gal Max Flow ...

Page 10: ...s 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 170 lpm 45 gpm against a discharge pressure head of 2 0 bar 30 psig requires 4 1 bar 60 psig and 85 Nm3 h 50 scfm air consumption Caution Do not exceed 8 6 bar 125 psig air supply pressure Flow rates indicated on chart were determined by pumping water...

Page 11: ...g 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 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 ...

Page 12: ...mping volume by counting the number of 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...

Page 13: ...p Anair regulator isusedto regulate air pressure A needle valve is used 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 onpage8 Thisisuseful whentheneedexists to control the pump from a remote location When the pum...

Page 14: ...ts 7 Check for any broken inner piston that would cause the air valve spool to be unable to shift Pump runs but little or no product flows 1 Check for pumpcavitation Slowpumpspeeddownto allow thick materialtoflowintoliquidchambers 2 Verifythatvacuumrequiredtoliftliquidisnotgreater thanthe vaporpressureofthematerialbeingpumped cavitation 3 Check for stickingballcheck valves a Ifmaterialbeingpumpedi...

Page 15: ...uitable container Be aware of any hazardous effects of contact with your process fluid NOTE The model photographed for these instructions incorporates rubber diaphragms balls and seats NOTE Replace worn parts with genuine Wilden parts for reliable performance Step 1 Before starting disassembly mark a line from each liquid chamber to its corresponding air chamber This line will assist in proper ali...

Page 16: ...anifold to expose intake valve balls and seats Inspect ball cage area of liquid chamber for excessive wear or damage Step 7 Remove one 1 set of large clamp bands which secure one 1 liquid chamber to the center section Step 8 Lift liquid chamber away from center section to expose diaphragm and outer piston Step 9A Using an adjustable wrench or by rotating the diaphragm by hand remove the diaphragm ...

Page 17: ...the opposite liquid chamber Inspect diaphragm assembly and shaft for signs of wear or chemical attack Replace all worn parts with genuine Wilden parts for reliable performance Step 10 To remove diaphragm assembly from shaft secure shaft with soft jaws a vise fitted with plywood plastic or other suitable material to ensure shaft is not nicked scratched or gouged Using an adjustable wrench remove di...

Page 18: ...of hazardous effects of contact with your process fluid The Wilden P4 metal pump utilizes a revolutionary Pro Flo air distribution system Proprietary composite seals reduce the coefficient of friction and allow the P4 to run lube free The Pro Flo air distribution system is designed to perform in on off non freezing non stalling tough duty applications Step 1 Loosen the air valve bolts utilizing a ...

Page 19: ...and gently sliding the spool out of the air valve body Inspect seals for signs of wear and replace entire assembly if necessary Use caution when handling air valve spool to prevent damaging seals NOTE Seals should not be removed from assembly Seals are not sold separately Step 6 Remove pilot spool retaining snap ring on both sides of center section with snap ring pliers Step 7 Remove air chamber b...

Page 20: ...uring 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 pilot spool Seals are not sold separately Step 10A Check center block shaft seals for signs of wear If necessary remove shaft seals with O ring pick and replace Ste...

Page 21: ... or equivalent 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 lube...

Page 22: ...e seal to travel down the bushing bore easier 5 With the seal clamped in the pliers insert the seal into the bushing bore and position the bottom of the seal into the correct groove Once 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 the pliers are removed you will notice a slight...

Page 23: ...move the adhesive covering from the back of the PTFE tape Ensure that the adhesive strip remains attached to the PTFE tape Step 2 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 g...

Page 24: ...WIL 10183 E 03 Wilden 24 EXPLODED VIEW AND PARTS LISTING P4 METAL FULL STROKE DIAPHRAGM FITTED EXPLODED VIEW Section 8 ...

Page 25: ...90 03 20 Shaft Pro Flo 1 04 3800 03 700 04 3800 03 700 04 3800 03 700 04 3800 03 700 21 Shaft Stud P4 WAPP Bolt 2 2 08 6150 08 04 6091 08 08 6150 08 08 6150 08 22 Inner Piston 2 04 3700 01 700 04 3700 01 700 04 3700 01 700 04 3700 01 700 23 Diaphragm 2 04 1010 56 24 Outer Piston 2 04 4552 01 04 4550 08 04 4550 03 04 4550 03P 25 Valve Seat 4 04 1120 56 26 Valve Ball 4 04 1080 56 27 Liquid Chamber 2...

Page 26: ...WIL 10183 E 03 Wilden 26 Exploded View and Parts Listing P4 METAL REDUCED STROKE DIAPHRAGM FITTED EXPLODED VIEW ...

Page 27: ... 3830 03 700 04 3830 03 700 04 3830 03 700 N A 21 Stud Shaft 2 04 6150 08 04 6150 08 04 6150 08 04 6150 08 Shaft Stud Ultra FlexTM 2 N R 04 6152 08 04 6152 08 N A 22 Inner Piston 2 04 3715 01 04 3715 01 04 3715 01 04 3715 01 Inner Piston Ultra FlexTM 2 04 3760 01 700 04 3760 01 700 04 3760 01 700 N A 23 Back up Diaphragm 2 24 Diaphragm 2 25 Outer Piston 2 04 4600 01 04 4600 03 04 4600 03 04 4600 0...

Page 28: ...WIL 10183 E 03 Wilden 28 Exploded View and Parts Listing P4 METAL SANIFLO 1935 2004 EC EXPLODED VIEW ...

Page 29: ...351 03 7 Muffler Plate Pro Flo 1 04 3180 20 700 8 Gasket Muffler Plate Pro Flo 1 04 3500 52 700 9 Gasket Air Valve Pro Flo 1 04 2600 52 700 10 Center Block Assembly Pro Flo 2 1 04 3110 20 11 Sleeve Theraded Pro Flo Center Block 4 04 7710 08 12 Pilot Sleeve Assembly 1 04 3880 99 13 O Ring 009 PilotSpoolRetaining Ø 208 xØ 070 2 04 2650 49 700 14 Seal Shaft 2 08 3210 55 225 15 Gasket Center Block Pro...

Page 30: ...ts do not require O rings Backup diaphragms for use with PTFE diaphragms only P4 Metal Saniflo 1935 2004 EC Material Diaphragms Reduced Stroke Backup Diaphragms Ultra Flex Diaphragms Full Stroke Diaphragms Full Stroke Backup Diaphragms FDA BUNA N 04 1010 69E N A 04 1020 52E N A N A FDA EPDM 04 1010 74E 04 1060 54E 04 1020 54E N A N A FDA FKM N A N A N A N A N A FDA Wil Flex N A N A N A 04 1040 55E...

Page 31: ...WIL 10183 E 03 Wilden ...

Page 32: ...d Terrace CA 92313 5651 USA P 1 909 422 1730 F 1 909 783 3440 psgdover com Where Innovation Flows PSG reserves the right to modifythe information and illustrations contained in this document without prior notice This is a non contractual document 05 2018 ...

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