USER MANUAL VP 20 PLASTIC/ METAL PUMPS
Contents
1. Head these safety warnings and instructions thismanual completely beforeinstallation and start up of the pump lt is the user s responsibility to retain this manual Any operation performed that is not in according to the information provided under the manual may render the pump s warranty invalid WARNINGS WARNING Check all the connections with gaskets for any looseness before operating the pump Any loose connection must be tightened to prevent any leakage WARNING Check all capscrews and ring nuts for ghtness before operating the pump for the first time WARNING Lubricate the pump continuously with the conditioner In order to prevent effluent water from the air line addition to usage of the conditioner discharge the water accumulated in the compressor tank WARNING Operate the pump with a conditioner installed at in front of the pump WARNING Be sure not to tighten excessively to the capscrews during the assembly and disassembly otherwise the pump s main body may be damaged WARNING The silencer must be used while operating the pump HP 20 METALLIC PUMP Pagel6 HP 20 METALLIC PUMP USER S MANUAL WARNING Please be careful at the pump transfer WARNING The pump should be installed onto the rubber mountings WARNING Take action to prevent static sparking Fire or explosion can result especially when handling flammable liquids The pump piping valves containers or other misc2. VP 20 METALLIC PUMP USER S MANUAL V E STA pump USER MANUAL VP 20 PLASTIC METAL PUMPS VP 20 METALLIC PUMP USER S MANUAL VESIA PUMP COMPRESSED AIR DOUBLE DIAPHRAGM TRANSFER PUMPS TABLE OF CONTENT PUMP PERFORMANCE CURVES 2 AIR INLET AND PRIMING 13 DIMENSIONS 3 FREQUENCY OF USE 14 PACKAGING 4 TROUBLESHOOTING 14 DIAPHRAGM MATERIALS 5 WARNINGS 15 SPARE PARTS DRAWINGS 6 PUMPING HAZARDOUS LIQUIDS 17 SPARE PARTS LIST 7 AIR VALVE ASSEMBLY 18 PRINCIPLE OF PUMP OPERATION 9 AIR VALVE MAINTENANCE 19 INSTALLATION amp START UP 9 PILOT VALVE ASSEMBLY 20 AREAS OF APPLICATION 11 PILOT VALVE MAINTENANCE 21 AIR CONNECTION 13 DIAPHRAGM MAINTENANCE 22 AIR VALVE LUBRICATION 13 INTERMEDIATE ASSEMBLY MAINTENANCE 24 AIR LINE MOISTURE 13 CHECK VALVE MAINTENANCE 25 PERFORMANCE CURVES MODEL HP 20 METALLIC PUMP Page 2 VP 20 METALLIC PUMP USER S MANUAL VE O A PUMP Makes life comfortable bar 10 m3 h hava giris debisi 67 m3 h Pump Head 0 20 40 60 80 100 120 140 160 Volumetric Capacity LPM The operation pressure is O to 7 bars Operation temperature is between 18 100 METRIC DIMENSIONS mm Dimensional tolerances 3 mm MODEL HP 20 METALLIC PUMP Page 3 VP 20 METALLIC PUMP USER S MANUAL VE 5 A PUMP Makes life comfortable z CIKIS HATTI 2 GIRIS HATI 3 4 G R A B C
3. CM16X60 5 10 5 10 RM10 P VES pam Pin Bushing Cover Air Inlet Assembly Gasket Air Valve Gasket Pilot Valve Front Gasket Pilot Valve Rear Gasket Inner Chamber O ring Pin Inner Diaphragm Holder Outer Diaphragm Holder Outer Diaphragm Holder Outer Diaphragm Holder Actuator Pin Diaphragm Rod Oil Seal Muffler Washer M8 Washer M8 Washer M10 Washer M10 Capscrew M 10 X60 imbus Capscrew M 10 X 60 imbus Capscrew M 8 X 45 Capscrew M 8 X 45 Capscrew M 10 X 60 Capscrew M 10 X 60 Capscrew M 10 X 50 Capscrew M 10 X 50 Capscrew M 10 X 30 imbus Capscrew M 10 X 30 imbus Capscrew M 16 X 60 Capscrew M 16 X 60 Ring Nut M10 Ring Nut M10 Nut Hex M10 PFPA AR p LIS D N Q I HP 20 METALLIC PUMP USER S MANUAL 35 5 10 5 10 MATERIAL CODES 30 ALUMINUM 31 CAST IRON 32 STAINLESS STEEL 33 POLYPROPYLENE 34 DELRIN 35 PVDF 36 POLYETHYLENE 38 BRONZE HP 20 METALLIC PUMP Ring Nut Flanged 16 Ring Nut Flanged 16 45 NEOPRENE 46 SANTOPRENE 47 BUNA N 48 EPDM 50 TEFLON 51 VITON 70 DIA SPECIAL MATERIAL STEEL VES Arun Page9 HP 20 METALLIC PUMP USER S MANUAL PRINCIPLE OF PUMP OPERATION The diaphragm pump is consisted of two diaphragm chambers and two diaphragms The diaphragms are connected to each other with a diaphragm rod andmove in a reciprocating action As one diaphragm performs thedischarge stroke the other diaphragm which is connected with the r
4. USER S MANUAL V E Makes life comfortable COMPOSITE PARTS LIST HP 20 METALLIC PUMP Page7 HP 20 METALLIC PUMP USER S MANUAL 1 9 10 11 HP 20 METALLIC PUMP 5012030 5012031 5012032 5022030 5022031 5022032 016030 016033 022030 022033 5032030 5032031 5032032 5042045 5042046 5042047 5042048 5042050 5042051 5052036 5052045 5052046 5052047 5052048 5052050 5052051 5062045 5062046 5062047 5062048 5062050 5062051 034033 044033 H055047 RM10 Suction Line Suction Line Suction Line Discharge Line Discharge Line Discharge Line Main Body Main Body Inner Chamber Inner Chamber Outer Chamber Outer Chamber Outer Chamber Check Ball Check Ball Check Ball Check Ball Check Ball Check Ball Check Ball Seat Check Ball Seat Check Ball Seat Check Ball Seat Check Ball Seat Check Ball Seat Check Ball Seat Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Air Valve Repair Kit Pilot Valve Repair Kit Bumper Nut Hex M10 N J I I NN N NN FS NS N 27 28 29 30 31 32 33 34 H064034 H072033 084047 094047 104047 115047 H124047 H137030 5073030 5073031 5072032 145090 152090 H165047 H174036 8 PM8 PM10 P PM10 10 60 CM10X60 I CM8X45 P CM8X45 CM10X60 P CM10X60 CM10X55 P CM10X55 10 30 CM10X30 IHB CM16X60 P
5. valve Remove the snap rings of two plugs beneath the air valve with pliers in order to have access to the internal parts of the air valve Then remove two caps Check O rings to see any abrasion or cuts Replace O rings as needed Take the spool out of the sleeve Be sure not to scratch or damage the surface of the spool s mating surface Wipe the spool with soft piece of cloth and check to see any scratch or damage Check inner surface of the sleeve to see any dirt scratches or other contaminants Remove the sleeve and replace with a new sleeve and spool assembly as necessary HP 20 METALLIC PUMP VES pume Third reassembly of the air valve To do this install one bumper together with its O ring on the one side of the air valve assembly Check O rings of the existing or new or sleeve and spool set replaced as necessary Carefully take the spool out from the sleeve Install six O rings into the six grooveson the sleeve Then install the liner onto the main housing of the air valve Be sure to apply a light coating of grease to the O rings before installing thesleeve into the valve body alignthe slots in the sleeve with the slots in thevalve body Insert the spool into the sleeve Be careful not to scratch or damage the spool during installation Install other bumper together with its O ring Install the snap ring The repair of the valve is completed During installing the complete with and gasket onto the pump be sure to have the holes of t
6. D E F G H I J 435 256 312 690 327 5 362 5 591 220 250 374 296 PACKING DIMENSIONS mm MODEL HP 20 METALLIC PUMP Page 4 VP 20 METALLIC PUMP USER S MANUAL VE 5 PUMP Makes life comfortable AB C 460 460 DIAPHRAGM MATERIALS AND OPERATION TEMPERATURES MODEL HP 20 METALLIC PUMP Page 5 VP 20 METALLIC PUMP USER S MANUAL V E S TA pump Lu ERR Neoprene It is resistant to the vegetable oils Its abrasion resistant is very good The fluids like acids esters ketones can cause damages 90 C 22 C to the material of construction and therefore they are not recommended Buna N It is generally used for oils It is very durable to the transfer of 87 C 22 C water and hydraulic oil EPDM It is durable to chemicals lt is not durable to oil and solvents It 138 C 40 has moderate resistance to the alcohols and ketones Teflon It is generally used for heavy chemicals and 5 1 features good resistance lt is suitable for heat transfer at elevated temperatures Viton It has very good resistance to acids oils and solvents Bes Santopren It is resistant to weak and medium acids It features good 135 C 40 C abrasion resistance Polypropylene It is resistant to chemicals It is usually preferred for food 82 C 0 C chemicals and cosmetic products COMPOSITE PARTS DRAWING OF HP 05 3 4 METALLIC PUMP MODEL HP 20 METALLIC PUMP Page 6 HP 20 METALLIC PUMP
7. LLIC PUMP Page23 HP 20 METALLIC PUMP USER S MANUAL For maintenance of diaphragms first remove the suction line of the pump and than block the pump discharge line Cut off the compressed air supplybleed thepressure from the pump and disconnectthe air supply line from the pump Drainany remaining liquid from the pump Inspect the pump assembly drawings and maintenance diagrams Remove the manifolds Remove the pump ball and ball seats Then remove the outer covers of the pump First Removal of diaphragm assemblies Use M16 wrench or socket to unscrew the outer diaphragm holder by turning counterclockwise direction and remove the diaphragm assembly from thediaphragmrod Then take onediaphragm together with outer and inner diaphragm holders and the otherdiaphragm with its diaphragm rod out In order to disassembly first diaphragm with its holder hold the diaphragm assembly with a vice by clamping the inner holder and remove the outer holder by turning it counterclockwise with M16 spanner Hold the diaphragm rod of other diaphragm assembly with a vice and dismantle diaphragm with a spanner Perform dismantling the other diaphragm in the same manner Check the diaphragm for cuts bursting abrasion and chemical corrosion Replace the diaphragms as necessary HP 20 METALLIC PUMP VES pume Second Installing diaphragms Insert M16 capscrews onto the outer diaphragm holder and push the diaphragm into the center hole Install the capscrews ont
8. ary to maintain the exhaust port of the pump above the liquid surface with pipe or hose Diaphragm pumps can be used to transfer the fluid in the tank readily by connecting them to the bottom of the tank HP 20 METALLIC PUMP Page12 HP 20 METALLIC PUMP USER S MANUAL V E STA PUMP Makes life comfortable Diaphragm pumps can also be used as barrel pumps They have effective suctions ability and able to transfer all the fluid in the barrel The diaphragm pumps are able to transfer fluids at 6 meter of deepness Cavitation might obstruct the operation To prevent this the air in the hose between the pump and fluid should be discharged HP 20 METALLIC PUMP Page13 HP 20 METALLIC PUMP USER S MANUAL AIR CONNECTION The air pressure should not be in excess 7 bars The pump should be provided with the air supply at such pressure and flow to achieve desired performance When the airsupply line is solid piping use a short length of flexible hose not less than 7 in diameter between the pumpand the piping to reduce strain to thepiping The weight of the air supply line regulators and filters must be supportedby some means other than the airinlet cap Otherwise unsupportive weight may result in damageto the pump A pressure regulatingvalve should be installed to insureair supply pressure does exceedrecommended limits WARNING If the size of air connection is smaller than the pump supply port the pump will not be able t
9. ates under cavitation In such cases the valveshould be closed slightly to obtain themost efficient air flow to pump flowratio Pagel4 HP 20 METALLIC PUMP USER S MANUAL FREQUENCY OF USE The pump should be flushed after each application to prevent its damage if the pump is used for the transfer of the fluid that contains suspended particles that settle and harden in the course of time when it is kept stand still Otherwise product remaining in thepump between uses could dry out orsettle out This could cause problemswith the diaphragms and check valvesat restart The pump should be completely drained after every use in particular under freezing temperatures PUMP PROBLEMS AND SOLUTIONS PROBLEM The pump fails to operate even the air is supplied The supplied air is directly exit through the exhaust filter SOLUTION Check the air valve of the pump The piston of the liner piston assembly of the air valve may be jammed Disassembly the air valve thenremove clean and lubricate the piston of the liner piston assembly Wipe off and lubricate the liner Install the piston in the liner and break in a while Install the air valve back and start the pump PROBLEM The pump operates but no flow is transferred SOLUTION Check the valves of the pump The valve plunger may be jammed by the foreign matters In such case no transfer of the fluid is possible HP 20 METALLIC PUMP VES Pump PROBLEM The pump is in operation but the capacity
10. ellaneous equipment must be grounded WARNING The air supply should be switched off before any repair or maintenance of the pump Then pump pressure should be released and air connection be removed Be carefulcompressed air line HP 20 METALLIC PUMP WARNING The fittings should be installed to eliminate any possible leakage of the transferred liquid WARNING In order to prevent the knock at the discharge the pump should be complete with the flexible hose adaptor at the discharge port where the pipe assembly 15 long WARNING Be sure using the gloves and goggles in the pump repair and maintenance works WARNING When used for toxic or aggressive fluids the pump should always be flushed with water before the repairment Pagel7 HP 20 METALLIC PUMP USER S MANUAL WARNING If the diaphragm is split then the transferred fluid may pass to the air side of the pump and diffuse to the atmosphere If pumping a product which is hazardous or toxic the air exhaust must be piped to an appropriate area for safe disposition VES Arun NOTE Contact to our company in case of any failure of the pump provided under the warranty 2 year warranty will be terminated if the pump is dismantled without notifying to our company PUMPING HAZARDOUS LIQUIDS When a diaphragm fails the pumpedliquid or fumes enter the air end ofthe pump Fumes may dissipate in the ambient air Whenpumping hazardous or toxic materials the exhaust air mus
11. firstthe compressed air supply bleed the pressure from the pump anddisconnect the air supply line fromthe pump First Inspect pump installation drawings Remove four capscrews by using 8 spanner or socket wrench Remove the air inlet cap and air inlet gasket The pilot valve assembly can now beremoved Second Inspect actuator pins See the assembly drawings Access to the actuator pins can be reached through the opening of the pilot valve assembly Remove the plungers fromthe bushings in each end ofthe cavity Inspect the HP 20 METALLIC PUMP VESTA pump Makes life comfortable 18 42 installed o ring for cuts and or wear Replace the o rings if it s necessary Lubricate O rings slightly and install the pins into the bushing Push the plungers in as far as they willgo Third Install the valve assembly into intermediate gap During installing the pilot valve assembly onto the intermediate portion be sure pilot valve ends located to the center of the actuator pins Install the gasket air inlet cover and capscrews Connect the air supply onto the pump The pump is now ready for operation Page25 HP 20 METALLIC PUMP USER S MANUAL CHECK VALVE BALL amp SEAT MAINTENANCE Shut off the suction line and discharge line of the pump before starting the maintenance work Then shut the compressed air supply discharge the pressure in the pipe and remove the compressed air connection Discharge the fluid in the pump Now the
12. he valve in line with the holes on the pump Connect the compressed air line onto the pump The pump is now ready to operation Page20 HP 20 METALLIC PUMP USER S MANUAL V E Makes life comfortable PILOT VALVE ASSEMBLY H044033 10 PART LIST OF PILOT VALVE REPAIR KIT Item No Part No Name of Part Qty 10A H454033B Pilot Valve Body 1 10B H464090 oleeve 1 10 H474047 sleeve 6 10D H484090 Spool 1 10E H494047 O ring Spool 3 10F 5124090 onap ring 1 HP 20 METALLIC PUMP Page21 HP 20 METALLIC PUMP USER S MANUAL PILOT VALVE MAINTENANCE To begin with the servicing of the air valve first shut off the compressed air bleed pressure from the pump and disconnect the air supply line from the pump First See pump assembly drawings Remove four capscrews by using M8 spanner or socket wrench Remove air inlet cover and air inlet port gasket The pilot valve assembly may now be taken out for inspection and service Second Removal of the pilot valve Remove the spool of the valve Wipe it to remove any dirt Check the spool and O ring to see any dirt cut or abrasion Replace O ring and spool as necessary Remove the snap ring from the end of the sleeve and remove the sleeve from the valve body Wipe it to remove any dirt Check the sleeve and O ring to see any dirt cut or abrasion Replace O ring and liner if needed HP 20 METALLIC PUMP VES pume Third Installing the pilot valve Genero
13. o inner diaphragm holder and screw it onto the rod by turning clockwise Hold loose assembly with a vice Screw M16 wrench with a spanner Third Installing diaphragm assembly onto pump Make sure the bumper is installed over the diaphragm rod Screw the rod of the diaphragm assembly by turning clockwise into threaded hole until it is in the same direction with the end of the inner diaphragm plate Insert rod into pump Bring the capscrew holes on the diaphragm in line with inner chamber capscrew holes Install outer chamber onto the pump by capscrews and ring nuts On the opposite side of the pump pull the diaphragm rod out as far aspossible Make sure the second bumperis installed over the diaphragm rod Screw the exposed part of the diaphragm assembly shaft in clockwise direction onto the diaphragm rod as much as possible and leave the gap sufficient enough to adjust the capscrew holes on the diaphragm in line with inner casing capscrew holes Install the part of outer casing onto the pump with capscrews nuts and washers Install the manifolds onto the pump with capscrews nuts and washers Perform the necessary connections onto the pump Now the pump is ready for the operation Page24 HP 20 METALLIC PUMP USER S MANUAL THRUST PIN MAINTENANCE Item No Part No Name of Part Qty 3 H015030 Main Body 1 21 H145090 Actuator Pin 2 18 H124047 O ring Pin 2 12 064036 Pin Bushing 2 To begin with the maintenance of the actuator
14. o provide the air required so it will not perform properly AIR VALVE LUBRICATION The air distribution valve and the pilot valve are designed to operate without lubrication This is the preferred modeof operation In regard HP 20 METALLIC PUMP VES pump to anticipated practice or inferior air quality it is likely include lubrication oil into the compressed air The pump air system will operate withproperly lubricated compressed Proper lubrication requires theuse of an airline lubricator system to deliver one drop of SAE 10 oil for every 10 liters sec of airconsumed by the pump at the operation point For better determination of the mixing ratios see the performance curves provided for the pump AIR LINE MOISTURE Water in the compressed air supply might give rise to problem like freezing of the water or icing in the discharge line thatcause the pump to cycle erratically or stopoperating These problems might be removed by using a point of use air dryer to supplement the user s airdrying equipment air drying equipment will removes the water andalleviates problems like freezing or icing AIR INLET AND PRIMING Before operating the pump turn the air supply valve at about 1 2 or 3 4 of a turn Afterthe pump primes the air valve can be opened to increase air flow as desired If opening of the valve increases of the reciprocating frequency without increase in air flow then it means that the pump oper
15. od ispulled to perform the suction At the end of the stroke an airdistribution valve automatically shifts reversing the entire sequence filling and pumping from alternate chambers Mutual movements that repeatedcontinuouslyensure suction and discharge movements onto the fluids in each chamber Continuously repeated INSTALLATION amp START UP HP 20 METALLIC PUMP eem VESTA PumP Makes life comfortable reciprocal motions pump the liquid during entering to andexitingfrom the chambers The flow of the fluid from one chamber to another is regulated by the suction and discharge valves The ball and butterfly valves automatically controls the fluid suction and discharge of the fluid The butterfly valves allow passage of the solid particles with a size up to diameter of the pipe The ball valves regulate passage of the small size particles Pagel0 HP 20 METALLIC PUMP USER S MANUAL The interconnections of the diaphragm pump are straightforward The fluid is taken from the bottom manifold and discharged at the upper manifold Diaphragm pumps are characterized by turbulence flow prevent turbulence flow the flexible hoses are installed upstream the suction and the discharge port In order to observe the pressures at the suction and discharge parts of the pump and adjust the flow rate the manometers and valves attached at the suction and discharge ports When one or both valves are closed down the pump will be
16. of the fluid is Insufficient SOLUTION There might be several reasons pump suction and discharge port sizes are not proper In such case the air flow for the pump operation will be insufficient he air flow is less than the required volumetric rate lt is likely that the compressor falls short in supplying required air he cross sectional area of the pump at the suction and discharge ports might be contracted Any contraction of the pump s suction and discharge ports might cause a drop in the real pump s capacity PROBLEM The pump transfers the fluid but the flow is fluctuating SOLUTION Check the pilot valve and air valve of the pump O rings of the piston of the pilot valve may be worn out If this is so replace the pilot valve The piston in the air valve might be worn out Disassemble the piston and liner assembly of the air valve and lubricate before reassembling If the problem still persists than replace the assembly completely PROBLEM There is excessive vibration in the pump during the fluid transfer SOLUTION There might be several reasons and solutions for that High exit pressure of the pump and lack of rubber mountings on the pump s pedestals Long discharge pipe and lack of compensators on the pipe installed at specific intervals to prevent vibration Use of flexible adaptors at the suction and discharge ports of the pump Pagel5 HP 20 METALLIC PUMP USER S MANUAL VESI
17. pump can be disassembled for the maintenance Hemove the manifold to have access to the check valves Inspect the check balls for any abrasion cuts or corrosion marks Perform the same checks on the check valve seats to see any cuts abrasion and any foreign materials embedded onto the surfaceof both the external and internal chambers The sphericalsurface of the check balls must seat flush to the surface of the check valveseats for the pump to operate to peak efficiency WARNING The air supply should be switched off before any repair or maintenance of the pump Then pump pressure should be released air connection be removed Be carefulcompressed air line Item No Part Name of Part Qty 2 5022030 Discharge Line 1 6 5042045 Check Ball Seat 4 1 5052045 Suction Line 1 7 5032030 Check Ball Seat 4 5 5012030 Outer Chamber 2 HP 20 METALLIC PUMP The damaged or worn out parts should be replaced as necessary Re assemble the parts of the check valves The seat should fit into thecounter bore of the outer chamber Assemble the pump make necessary connections The pump is ready for operation VESTA pump Makes life comfortable Page26
18. stopped When they are opened the operation will be resumed For the pump operation the pressurized air is required The pump is operated at the full capacity if the suction and discharge hoses are the same size A conditioner should be installed at the suction port The conditioner will allow the pressure adjustment lubricating the air direction valve The valve installed downstream the air inlet line the air flow is regulated by the valve operation HP 20 METALLIC PUMP VES pume Special precautions should be observed in the operation of diaphragm pump These precautions will provide the maximum efficiency to the the pump The pump should be located as close to the product being pumped as possible he suction line length and number of fittings should be kept in minimum size of the suction pipe should not less than the size of the suction port of the pump e For installations of rigid piping short sections of flexible hose should be installed between the pump and the piping e he flexible hose reduces vibration and strain to the pumping system e he buffer tank should be provided at the discharge port of the pump if discharge pipe assembly is long The buffer tank will reduce transfer of the vibration in the pipe assembly onto the pump Pagell VESTA Pump HP 20 METALLIC PUMP USER S MANUAL listes cnd AREAS OF APPLICATION Diaphragm pumps can also be used as submerged pump It is necess
19. t be piped to anappropriate area for safe disposal If the material of construction of the pump is compatible to the liquid being pumped the pump can be submerged into the fluid In such HP 20 METALLIC PUMP case the air exhaust must bepiped above the liquid level size of the pipe for air discharge should be at least 1 diameter Reducingthe pipe size will reduce air flow and pump performance If the liquid to be transferred is at higher lever than the pump flooded suctioncondition the discharge port should be kept at a higher level then the liquid surface to prevent siphoning spills Pagel8 HP 20 METALLIC PUMP USER S MANUAL V E Makes life comfortable AIR VALVE ASSEMBLY H034033 9 PART LIST OF AIR VALVE REPAIR KIT Item No Part No Name of Part Qty 9A H554033B Air Valve Body 1 9B H564070 Sleeve and Spool Set 1 9 H574047 O ring 8 9D H584033 Cap 2 9E H504090 onap ring 2 8 HP 20 METALLIC PUMP Pagel9 HP 20 METALLIC PUMP USER S MANUAL AIR VALVE MAINTENANCE To begin with the servicing of the air valve first shut off thecompressed air bleed pressure from thepump and disconnect the air supply line from the pump First inspect the exploded view of the air valve Remove four hex capscrews by using wrench or socket Remove the air valve assembly from the pump Remove the gasket and check to see any cracking or damage Replace the gasket if it is necessary Second Disassembly of the air
20. usly lubricate outside diameter of the sleeve and o rings Then carefully insert sleeve into valve body During the installation of the sleeve takeCAUTION not to damage O rings Install the snap ring to sleeve Lubricate the other surface of the piston and O ring Then carefully install the spool into the sleeve During the installation of the piston takeCAUTION not to damage O rings Fourth Re install the valve assembly into intermediate portion During installing the pilot valve assembly onto the intermediate portion be sure pilot valve ends located to the center of the piston pins Re install the gasket air inlet capand capscrews Connect the air supplyto the pump The pump is now ready for operation Page22 HP 20 METALLIC PUMP USER S MANUAL V E S PUMP Makes life comfortable DIAPHRAGM MAINTENANCE Item No Part No Name of Part Qty ot 19 4 20 m 192 3 H015033 Main Body 1 23 H165047 Oil Seal 22 H152090 Diaphragm Rod 17 H137047 Gasket Inner Chamber 4 022033 Inner Chamber 31 CM10X30 IHB Capscrew M 10 X 30 imbus 11 H056047 Bumper 19 H132030 Inner Diaphragm Holder 8 5062045 Diaphragm 20 5072030 Outer Diaphragm Holder 32 CM16X60 Capscrew M 16 X 50 2 1 2 2 2 2 1 2 2 2 Double diaphragms are used for the pump with Teflon diaphragm The rubber diaphragm which installed at the front of the Teflon diaphragm provides supports and extends the service life HP 20 META
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