Graco 306770J User's Manual
Contents
1. directement ou indirectement avec les procedures concern es Graco Phone Numbers TO PLACE AN ORDER contact your Graco distributor or call one of the following numbers to identify the distributor closest to you 1 800 367 4023 Toll Free 612 623 6921 612 378 3505 Fax 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 Sales Offices Minneapolis Detroit International Offices Belgium Korea Hong Kong Japan GRACO INC P O BOX 1441 MINNEAPOLIS MN 55440 1441 www graco com PRINTED IN U S A 306770 01 1963 Revised 02 2004 8 3067702. Instructions Parts List BACK PRESSURE VALVE 306770 300 psi 2 1 MPa 21 bar Maximum Inlet Pressure 180 psi 1 2 MPa 12 bar Maximum Regulated Pressure Model 206019 Series F For use with Monark President and 5 1 Bulldog pumps in circulating supply systems e Controls line pressures from 0 180 psi 0 1 2 MPa 0 12 bar e Tungsten carbide valve stem and seat Maintains fluid pressure in circulating supply system A Read warnings and instructions See page 2 for Table of Contents PROVEN QUALITY LEADING TECHNOLOGY GRACO INC P O BOX 1441 MINNEAPOLIS MN 55440 1441 Copyright 2002 Graco Inc is registered to I S EN ISO 9001 Table of Contents Symbols WV ETA Basch Se Oe sadn ein Sinead are aaia 2 Warning Symbol Installation ss Meee eens Bvt Ra hence a Seed Aled 4 Operation 000 c ccc eee 5 A WARNING SEVICE vyoo Pek oe ch wdc bed Sole DER aE as 5 Pa Se ai Saeed et ttt eee eee teh eae GA crea 2 6 This symbol alerts you to the possibility of serious Dimensions o on uusinnan rarua rarer rren 7 injury or death if you do not follow the instructions Technical Data 0 0 ccc ccc eee eee 7 Caution Symbol Graco Standard Warranty 0000e e eee 8 Graco Phone Numbers 0000eeeeee 8 A CAUTION This symbol alerts you to the possibility of damage to or destruction of equipment if you do not follow the corresponding instructions 2 306770 A
3. WARNING uA ima PRESSURIZED EQUIPMENT HAZARD Spray from the gun hose leaks or ruptured components can splash fluid in the eyes or on the skin and cause serious injury Do not stop or deflect fluid leaks with your hand body glove or rag Follow the Pressure Relief Procedure for your equipment if the spray tip clogs and before clean ing checking or servicing the equipment Tighten all the fluid connections before operating the equipment Check the hoses tubes and couplings daily Replace worn damaged or loose parts immediately Permanently coupled hoses cannot be repaired replace the entire hose EQUIPMENT MISUSE HAZARD Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury ea NA INSTRUCTIONS This equipment is for professional use only Read all instruction manuals tags and labels before operating the equipment Use the equipment only for its intended purpose If you are uncertain about usage call your Graco distributor Do not alter or modify this equipment Use only genuine Graco parts and accessories Check equipment daily Repair or replace worn or damaged parts immediately Do not exceed the maximum working pressure of the lowest rated system component Refer to the Technical Data on page 7 for the maximum working pressure of this equipment Use fluids and solvents that are compatible with the equipment wetted parts Refer to the Techni cal Da
4. d re torque if necessary or if leaking occurs Rein stall the back pressure valve in the line 306770 5 Parts Model 206019 Series F DETAIL A AN Torque to 120 130 in lb 13 6 14 7 Nem See Detail A for torque sequence Q NOTE Numbers indicate HA HER capscrew 4 tightening se A Torque to 12 15 ft lb 16 20 Nem BE quence Torque evenly to AN nif 7 10 in lb 0 8 1 1 Nem PTFE side down eae ae then re torque to 120 130 in lb 13 6 14 7 Nem oo Bie P a 7866 Ref Ref No PartNo Description Qty No PartNo Description Qty 2 101180 PES A i 14 166964 GASKET acetal 0 1 a 0 14 bar 15t 203375 STEM valve 3t 104430 PIN cotter 0 06 1 5 mm dia 0 75 16 186872 SCREW adjusting 19 mm Ig 17 203985 SUPPORT diaphragm 101682 SCREW soc hd cap 1 4 20 x 5 8 160033 PLATE spring i 18 209027 CAP valve 7 160034 SPRING helical compression 8 9 19t 206275 SEAT valve 20t 171913 GASKET cellulose fibre 164864 PLATE diaphragm 21 157277 PACKING o ring thiokol 160741 NUT special lock diaphragm 10 160745 TUBE gauge 11t 172193 DIAPHRAGM 12t 171912 GASKET cellulose fibre 13 165750 BODY valve electroless nickle plated ee h h h h h Recommended tool box spare parts Keep on hand to reduce down time oa st i d st Kt O oM _ T Included in Repair Kit 210754 6 306770 Dimensions 3 875 98 mm Diameter 1 npt f Fluid Outlet eae 1 npt f Fluid Inle
5. he valve and relieve the system pressure before servicing Regular cleaning and inspection of the valve based upon the degree and kind of service is essential Shut off the pump and relieve the line pressure by turning the valve adjusting screw counterclockwise until no spring tension is felt To clean and inspect the valve remove it from the line disassemble and clean with a compatible solvent A CAUTION Use special care in handling the valve to avoid damaging the diaphragm 11 and the hard carbide valve stem 15 and seat 19 Carefully inspect the diaphragm 11 for cracks or other damage Before reassembling check for chips or other dirt that could puncture the diaphragm Check also to see if the gasket 12 needs to be replaced Reinstall the diaphragm parts in reverse order Torque the retaining nut 9 to 12 15 ft lb 16 20 Nem Carefully inspect the seat 19 for damage or wear Obstructing dirt could cause regulated pressure to creep Replace if necessary Replace the seat gasket 14 when replacing the seat 19 Torque the seat to 15 20 ft lb 21 27 Nem To remove or install the gauge 2 use a wrench on the square portion of the gauge stud only Use thread sealer sparingly on the male threads of the gauge when installing to prevent plugging the gauge Reassemble the remainder of the parts in reverse order Tighten valve capscrews 4 per sequence shown on page 6 Check the torque after 24 hours an
6. n 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 Graco 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 pe
7. pply Line a Fluid Supply Line moov A CAUTION Before installing the valve check the tightness of the capscrews 4 The screws might be loose before the valve is installed and put under pressure See the Parts Drawing for the tightening sequence and torque value After 24 hours or if the valve leaks during operation check and torque the screws again 4 306770 7867 Install the valve in the spray gun return line See the Typical Installation Connect the line to the 1 in npt f inlet and outlet Make sure flow agrees with IN and OUT markings on the valve body If more than one spray station is used the back pres sure valve should be installed in the supply line after the last station to maintain proper circulating pressures in the system Operation The valve is adjustable to control fluid pressures in a circulating system from 0 180 psi 0 1 2 MPa 0 12 bar The back pressure valve controls pressure ahead of its intake Turn the adjusting screw 16 CLOCKWISE to in crease pressure and COUNTERCLOCKWISE to decrease pressure Adjust the pump pressure and back pressure valve for best spraying combination and for proper circulation of fluid Flush the valve with a compatible solvent whenever the rest of the system or unit pump spray valve etc is being flushed Open the valve before flushing turn the screw counterclockwise Service A WARNING Always open t
8. rson 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 will 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
9. t 7865 Technical Data Maximum Inlet Pressure 0 cece eee eee 300 psi 2 1 MPa 21 bar Pressure Control Range 000 5 0 180 psi 0 1 2 MPa 0 12 bar Approx Maximum FIOW 00 cece eee 6 gpm 22 7 liters min with 100 centipose fluid at 60 psi 400 kPa 4 bar Fluid Inlet Port 2c etee iat eeeaetiant ace Gere wear amas era ERSA tte doen 1 npt f Fluid Outlet Port ees rene aki alee danse ade ees ae SE andre EDAT 1 npt f Wen aa ee aa oh ete cay esi a NG ae eh eat Vee ees 4 Ib 1 8 kg Wetted Parts 2 20 cece eee eee eee Tungsten Carbide PTFE Nylon Carbon Steel Aluminum Thiokol Thiokol is a registered trademark of the Thiokol Chemical Corporation 306770 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 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 accordance 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 misapplicatio
10. ta section of all equipment manuals Read the fluid and solvent manufacturer s warnings Do not exceed the maximum working pressure of the lowest rated system component This equip ment has a 300 psi 2 1 MPa 21 bar maximum inlet pressure Do not use hoses to pull equipment Route hoses away from traffic areas sharp edges moving parts and hot surfaces Do not expose Graco hoses to temperatures above 82 C 180 F or below 40 C 40 F Wear hearing protection when operating this equipment Do not lift pressurized equipment Comply with all applicable local state and national fire electrical and safety regulations Never use 1 1 1 trichloroethane methylene chloride other halogenated hydrocarbon solvents or fluids containing such solvents in pressurized aluminum equipment Such use could result in a chemical reaction with the possibility of explosion 306770 3 Installation Typical Installation anil Ww KEY m ik i E te i i i S ee i Fluid Pressure Regulator Air Spray Gun Fluid Return Line Back Pressure Valve Air Su
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