Graco 310537C User's Manual
Contents
1. SPRING compression PLATE spring GAUGE 0 to 200 psi 0 to 1 4 MPa 0 to 14 bar SEAT stainless steel amp tungsten carbide RETAINER diaphragm stainless steel amp tungsten carbide DIAPHRAGM SCREW adjusting GASKET acetal copolymer HOUSING PLATE diaphragm GASKET cellulose fibre GASKET cellulose fibre CAP NUT retaining PELLET nylon O RING Thiokol 8 These parts are included in Repair Kit 916139 which may be purchased separately i Keep these spare parts on hand to reduce down time 310537 5 EA i E E sss 6 310537 Dimensions 4 in 102 mm diameter 7 25 In 184 mm 1 1 4 npt f inlet and outlet 8717A Technical Data Maximum inlet pressure 0 ene teen eee 300 psi 21 bar 2 1 MPa Regulated pressure range 0 cece eee eee eee 5 to 200 psi 0 3 to 14 bar 0 03 to 1 4 MPa Inlet and outlet size arte fi eee ee een ae te ee die de Oe te Dae ig dele dita saad 1 1 4 npt f Gauge Port Size nss ai aaea kadai a aceite aia Mae Mania mat ones pened a EE wee be eas 1 4 npt f Wetted parts usposa ded need ntewleeie tent Low siege seb obs 304 amp 316 stainless steel tungsten carbide celcon Diaphragm nylon fabric base with impregnated buna N and material side is PTFE coated Weight scx veces oe a a Sete cleat alee cite bate eae ico eel aoe tay dena eat a EA 8 5 Ib 3 9 kg Thiokok is a registered trademark of the Thiokol Chemical Cor2. creep Replace the seat if necessary 10 Replace the seat gasket 14 when replacing the seat 10 Torque the seat to 15 to 20 ft lb 21 to 27 N m 11 To remove or install the gauge 8 use the wrench on the square portion of the gauge stud only A CAUTION Use thread sealer sparely on the gauge s male threads when installing it to avoid plugging the gauge 12 Lubricate both sides of the spring plate 7 and spring 5 with lithium base grease 13 Lubricate the adjusting screw threads 14 Assemble the remaining parts 15 Tighten the regulator cap screws 1 finger tight then torque them to 120 to 130 in Ib 13 6 to 14 7 N m in a criss cross pattern See the TOP VIEW in the parts drawing 16 Install the back pressure valve back in the fluid line Parts 8718A AN See TOP VIEW Apply anaerobic pipe sealant to threads Torque to 10 12 ft lb 13 5 16 N m AN PTFE side down A Apply lithium base grease Torque to 15 20 ft lb 21 27 N m TOP VIEW 6 Torque screws 1 to 120 130 in lb 13 6 14 7 N m in order shown Model 916154 Stainless Steel Back Pressure Valve Includes items 1 to 22 Ref No i Part No 101682 111697 104144 160033 187873 616439 616440 172193 186872 171117 187878 164864 171912 171913 209027 160741 160742 157277 Description SCREW soc hd cap 1 4 20 x 5 8 AN Lubricate threads Qty PLUG sq hd pipe 1 4 npt
3. Handle the back pressure valve with care to avoid damaging the diaphragm Installing the Back Pressure Valve Install the back pressure valve in the spray gun return line See Fig 1 8719A Connect the line to the 1 1 4 in npt f inlet and outlet Make sure the flow direction agrees with the IN and OUT markings on the valve body The back pressure valve is adjustable to control the fluid pressures in a circulating system from 5 to 200 psi 0 3 to 14 bar 0 03 to 1 4 MPa If more than one spray station is used install the back pressure valve in the fluid supply line after the last station This will help maintain proper circulating pressures in the system Operation NOTE The back pressure valve controls pressure ahead of its intake Turn the adjusting screw clockwise to increase pres sure and counterclockwise to decrease pressure Adjust the pump pressure and back pressure valve for the best spraying combination and for proper circula tion of fluid Flush the back pressure valve with a compatible solvent whenever the rest of the system or unit is being flushed Open the back pressure valve before flushing by turning the screw counterclockwise 310537 3 Service Pressure Relief Procedure A WARNING PRESSURIZED EQUIPMENT HAZARD The system pressure must be manually relieved to prevent the system from starting or spraying acci dentally To reduce the risk of an injury from acci dental spray from the gun spl
4. Instructions Parts List GRACO STAINLESS STEEL WATERBASE COMPATIBLE 310537C Back Pressure Valve Used with abrasive fluids in circulating systems to provide regulated back pressure to the spray gun s and to maintain proper circulating pressure throughout the system For professional use only Important Safety Instructions Read all warnings and instructions in this manual Save these instructions 300 psi 2 1 MPa 21 bar Maximum Inlet Pressure 200 psi 1 4 MPa 14 bar Maximum Regulated Pressure Model 916154 Stainless Steel Back Pressure Valve with carbide wear parts for use with abrasive fluids Table of Contents Warnings 0 cee eee eee 2 Installation 00 0 c cece eee 3 Operation aarahi cane he Ree eee 3 SOMVICE siiip Races Aai e aa Meas aces 4 Paris cern ia oh oe da 5 Dimensions 0 00 e eee eee 6 Technical Data 0 7 Graco Standard Warranty 8 8717A Graco Information 8 PROVEN QUALITY LEADING TECHNOLOGY re NA INSTRUCTIONS 2 310537 A WARNING EQUIPMENT MISUSE HAZARD Equipment misuse can cause the equipment to rupture malfunction or start unexpectedly and result in serious injury This equipment is for professional use only Read all instruction manuals warnings tags and labels before operating the equipment Use the equipment only for its intended purpose If you are uncerta
5. aco will repair or replace free of charge any defective parts The equipment will be returned to the original purchaser transportation prepaid If inspection of the equipment does not disclose any defect in material or workmanship repairs will be made at a reasonable charge which charges may include the costs of parts labor and transportation THIS WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE Graco s sole obligation and buyer s sole remedy for any breach of warranty shall be as set forth above The buyer agrees that no other remedy including but not limited to incidental or consequential damages for lost profits lost sales injury to person or property or any other incidental or consequential loss shall be available Any action for breach of warranty must be brought within two 2 years of the date of sale Graco makes no warranty and disclaims all implied warranties of merchantability and fitness for a particular purpose in connection with accessories equipment materials or components sold but not manufactured by Graco These items sold but not manufactured by Graco such as electric motors switches hose etc are subject to the warranty if any of their manufacturer Graco will provide purchaser with reasonable assistance in making any claim for breach of these warranties In no event wil
6. ashing fluid or moving parts follow the Pressure Relief Proce dure whenever you e are instructed to relieve the pressure e stop spraying e check or service any of the system equipment e or install or clean the spray nozzle 1 Shut off the pump 2 Open the dispensing valve if used 3 Open the fluid drain valve to relieve all fluid pres sure having a container ready to catch the drain age Service Procedure NOTE Regular cleaning and inspection of the valve based upon the degree and kind of service is essential 1 Shut off the pump and open the back pressure valve by turning the adjusting screw 13 counter clockwise until no spring pressure is felt Relieve all air and fluid pressures in the system 2 Remove the back pressure valve from the fluid line 3 Disassemble the valve and clean it with a suitable solvent See the parts drawing page 5 4 Carefully inspect the diaphragm 12 for cracks or other damage Replace if necessary 4 310537 5 Check for chips or dirt that could puncture the membrane or diaphragm before assembling the valve 6 Check if the gasket 17 needs to be replaced 7 Lubricate the threads of the diaphragm retainer 11 8 Install the diaphragm parts onto the valve housing 15 Torque the retaining nut 20 to 10 to 12 ft lb 13 5 to 16 N m 9 Carefully inspect the seat 10 for damage wear or dirt These things could cause the regulated pressure to
7. in about usage call your Graco distributor Do not alter or modify this equipment Use only genuine Graco parts and accessories Check the equipment daily Repair or replace worn or damaged parts immediately Do not exceed the maximum working pressure of the lowest rated system component The maxi mum inlet pressure of this equipment is 300 psi 2 1 MPa 21 bar See the Technical Data on page 7 Follow the Pressure Relief Procedure on page 4 if the spray tip clogs and before cleaning checking or servicing the equipment Route hoses aaway from traffic areas sharp edges moving parts and hot surfaces Do not expose Graco standard hoses to temperatures above 180 F 82 C or below 40 F 40 C Do not use the hoses to pull the equipment Use only fluids and solvents that are compatible with the equipment wetted parts See the Techni cal Data sections of all the equipment manuals Read the fluid manufacturer s warnings Always wear protective eyewear gloves clothing and respirator as recommended by the fluid and solvent manufacturers Wear hearing protection when operating this equipment Comply with all applicable local state and national fire electrical and other safety regulations Installation KEY A Fluid Supply Line B Air Spray Gun C Fluid Pressure Regulator D Air Supply Line E Adjusting Screw F Back Pressure Valve G Fluid Return Line NAN im iti i 0s IIG Fig 1 A CAUTION
8. l Graco be liable for indirect incidental special or consequential damages resulting from Graco supplying equipment hereunder or the furnishing performance or use of any products or other goods sold hereto whether due to a breach of contract breach of warranty the negligence of Graco or otherwise FOR GRACO CANADA CUSTOMERS The parties acknowledge that they have required that the present document as well as all documents notices and legal proceedings entered into given or instituted pursuant hereto or relating directly or indirectly hereto be drawn up in English Les parties reconnais sent avoir convenu que la r daction du pr sente document sera en Anglais ainsi que tous documents avis et proc dures judiciaires ex cut s donn s ou intent s a la suite de ou en rapport directement ou indirectement avec les procedures concern es Graco Information For the latest information about Graco products visit www graco com TO PLACE AN ORDER contact your Graco distributor or call to identify the distributor closest to you Phone 612 623 6921 or Toll Free 1 800 328 0211 Fax 612 378 3505 All written and visual data contained in this document reflects the latest product information available at the time of publication Graco reserves the right to make changes at any time without notice Original instructions This manual contains English MM 310537 Graco Headquarters Minneapolis International Offices Belgium China Japan K
9. orea GRACO INC AND SUBSIDIARIES S P O BOX 1441 S MINNEAPOLIS MN 55440 1441 S USA Copyright 1996 Graco Inc All Graco manufacturing locations are registered to ISO 9001 www graco com Revised May 2012 8 310537
10. poration 310537 7 Graco Standard Warranty Graco warrants all equipment manufactured by Graco and bearing its name to be free from defects in material and workmanship on the date of sale by an authorized Graco distributor to the original purchaser for use With the exception of any special extended or limited warranty published by Graco Graco will for a period of twelve months from the date of sale repair or replace any part of the equipment determined by Graco to be defective This warranty applies only when the equipment is installed operated and maintained in accor dance with Graco s written recommendations This warranty does not cover and Graco shall not be liable for general wear and tear or any malfunction damage or wear caused by faulty installation misapplication abrasion corrosion inadequate or improper maintenance negligence accident tampering or sub stitution of non Graco component parts Nor shall Graco be liable for malfunction damage or wear caused by the incompatibility of Graco equipment with structures accessories equipment or materials not supplied by Graco or the improper design manufacture installation operation or maintenance of structures accessories equipment or materials not supplied by Graco This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for verification of the claimed defect If the claimed defect is verified Gr
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