Graco 307-756 In-Line Valve User's Manual
Contents
1. Maximum Fluid Working Pressure 3000 psi 21 0 MPa 210 bar Fluid Valve Orifice Size 0 188 in 4 78 mm dia Fluid e A f Fluid Outlet Aa Ef Wetted Parts Aluminum Tungsten Carbide Stainless Steel Zinc plated Steel PTFE Brass Delrin Length 8 125 in 206 mm Height 5 in 127 mm Weight 14 oz 410 g Delrin is a registered trademark of the DuPont Co Manual Change Summary e This manual was revised to include the changes from PCN C 14 307 756 Notes 307 756 15 The Graco Warranty Graco warrants all equipment listed in this manual which is 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 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 misapplication abrasion corrosion inadequate or improper maintenance negligence accident tampering or subst2. in a fire or explosion and serious injury Ground the equipment and the object being sprayed Refer to Grounding on page 6 If there is any static sparking or you feel an electric shock while using this equipment stop dis pensing immediately Do not use the equipment until you identify and correct the problem Provide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid being sprayed Keep the dispensing area free of debris including solvent rags and gasoline Electrically disconnect all equipment in the dispensing area Extinguish all open flames or pilot lights in the dispensing area Do not smoke in the dispensing area Do not turn on or off any light switch in the dispensing area while operating or if fumes are present Do not operate a gasoline engine in the dispensing area TOXIC FLUID HAZARD Hazardous fluid or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin inhaled or swallowed Know the specific hazards of the fluid you are using Store hazardous fluid in an approved container Dispose of hazardous fluid according to all local state and national guidelines Always wear protective eyewear gloves clothing and respirator as recommended by the fluid and solvent manufacturer 4 307 756 Notes 307 756 5 Installation Grounding To reduce the risk of static spar
3. swivel A or to the 1 4 npsm inlet fitting 7 NOTE To avoid leaks use pipe sealant on the tapered male pipe threads A WARNING Be sure your system has a fluid drain valve near Several accessories area available for use with the the pump fluid outlet to help relieve fluid pressure In Line Valve Choose the application device that is in the pump hose and In Line Valve triggering best suited to your needs See Fig 1 Refer to the the valve to relieve pressure may not be sufficient instructions supplied with each accessory for installa tion information Spray Wand Roller 7525 A Fig 1 307 756 7 Operation Pressure Relief Procedure 4 Disengage the valve safety knob A WARNING 5 Hold a metal part of the valve firmly to the side of a grounded metal waste container and trigger the INJECTION HAZARD valve to relieve pressure Fluid under high pressure can be in jected through the skin and cause 6 Engage the valve safety knob serious injury To reduce the risk of an injury from injection splashing fluid or moving 7 Open the pump drain valve to help relieve fluid parts follow the Pressure Relief Procedure pressure in the pump hose and valve Triggering whenever you the valve to relieve pressure may not be sufficient e are instructed to relieve the pressure Have a container ready to catch the drainage stop spraying dispensing check or service any of the system equipment 8 Leave the drain
4. to loosen the cap screw 1 using a 3 82 in socket head wrench 5 Use a 3 8 in open end wrench to unscrew the packing screw 14 6 Push the valve rod 18 out the front of the valve 7 Use a hooked pick to carefully remove the v pack ings 10 and glands 11 12 from the valve 8 Clean all parts thoroughly in a compatible solvent dry and inspect for damage Replace the parts as needed Reassembly 1 Lubricate the smooth shaft of the rod 18 Insert the threaded end of the rod through the front of the valve and through the back 2 One at atime slide the male gland 12 and the six v packings 10 with the lips of the v packings facing the front of the valve onto the valve rod and slide them into the packing cavity Insert the fe male gland 11 press it gently into the packing cavity to help seat the packings 3 Screw the packing screw 14 loosely into the cavity 4 Install the trigger 15 and pivot 9 5 Place a washer 2 on the valve rod and thread the adjusting nut 13 onto it 6 Hold the adjusting nut 13 with an adjustable wrench Then thread the cap screw 1 a few turns into the adjusting nut 7 Push the adjusting nut 13 forward as far as possible and check for 1 8 5 16 in 3 8 mm trigger free play See Fig 3 Adjust the screw as necessary and then tighten the adjusting nut A WARNING To reduce the risk of serious injury whenever you are instructed to relieve pressure alwa
5. ECTION WITH ACCESSORIES EQUIPMENT MATERIALS OR COMPONENTS SOLD BUT NOT MANUFACTURED BY GRACO These items sold but not manufactured by Graco such as electric motors gas engines 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 reconnaissent 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 proc dures concern es Graco Phone Number TO PLACE AN ORDER contact your Graco distributor or call this number to identify the distributor closest to you 1 800 367 4023 Toll Free All written and visual data contained in this document re
6. INSTRUCTIONS PARTS LIST 5 307 756 9 This manual contains important GRACO Rev C e warnings and information nae an Supersedes Rev B READ AND KEEP FOR REFERENCE a and PCNC quality counts INSTRUCTIONS In Line Valve 3000 psi 21 0 MPa 210 bar Maximum Working Pressure Model 220 229 Series A For use in atomizing and non atomizing fluid applications A WARNING To reduce the risk of serious injury including fluid injection you must attach to the outlet of this valve an appropriate application device such as a spray tip and tip guard or high pressure extension and or roller See Installation on page 7 for more de tails 04884 GRACO INC P O BOX 1441 MINNEAPOLIS MN 55440 1441 COPYRIGHT 1986 GRACO INC Graco Inc is registered to I S EN ISO 9001 Table of Contents Symbols A ne 2 Warning Symbol Installation satie arar ras ea 6 Operation u a een ees 8 A WARNING SEVICE u t a 11 Pais e ee lts y al eN o e pet de 12 This symbol alerts you to the possibility of serious Technical Data 22222 14 injury or death if you do not follow the instructions Warranty au ee Slee as 16 Caution Symbol Graco Phone Number 2222222 seen 16 4 CAUTION This symbol alerts you to the possibility of damage to or destruction of equipment if you do not follow the corresponding instructions 44 WARNING EQUIPMENT MISUSE HAZARD Equipment misuse can cause the equipment to rupture o
7. charge from Graco Inc 1 Refer to the Operation section of the manual for the application device you are using on the In Line Valve 2 If you are using a tip guard directly on the valve or a spray wand do not install the spray tip until the pump sprayer and system are fully primed 3 Start the pump sprayer according to the instruction supplied with it 4 Always use the lowest pressure necessary to get the desired results Higher pressure causes pre mature wear of the system and if using a paint roller causes paint to squirt out instead of flowing evenly 5 Use a full open full close trigger action Whenever you stop spraying engage the safety knob How to Use the Safety Knob To engage the safety knob turn the knob fully clock wise this locks the needle in the forward position making the valve inoperative To disengage the safety knob turn the knob fully counterclockwise See Fig 2 To engage safety knob ON SAFE turn knob fully clockwise To disengage safety knob OFF SAFE turn knob fully counterclockwise Fig 2 307 756 9 Maintenance Lubrication Oil the exposed part of the valve rod 18 and trigger pivot See Fig 3 Daily Cleaning A WARNING To reduce the risk of serious injury whenever you are instructed to relieve pressure always follow the Pressure Relief Procedure on page 8 A WARNING Before flushing be sure the entire system and flushing pails are pr
8. flects 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 Los Angeles Foreign Offices Belgium Canada England Korea France Germany Hong Kong Japan GRACO INC P O BOX 1441 MINNEAPOLIS MN 55440 1441 PRINTED IN U S A 307 756 February 1986 Revised July 1997 16 307 756
9. itution 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 or 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 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 CONN
10. king ground the pump and all other dispensing equipment used or located in the dispensing area Check your local electrical code for detailed grounding instructions for your area and type of equipment be sure to ground all of the follow ing equipment 1 6 Pump or sprayer ground as instructed in you separate pump or sprayer manual Air compressor or hydraulic power supply ground according to local code and manufacturer s recom mendations Fluid hoses use only grounded hoses with a maximum of 500 ft 150 m combined hose length to ensure grounding continuity 307 756 4 In line valve obtain grounding through connection to a properly grounded fluid hose and pump or sprayer Fluid supply container according to local code Object being sprayed according to local code All solvent pails used when flushing according to local code Use only metal pails which are con ductive Do not place the pail on a non conductive surface such as paper or cardboard which inter rupts the grounding continuity To maintain grounding continuity when flushing or relieving pressure always hold a metal part of the valve firmly to the side of a grounded metal pail then trigger the valve Installation NOTE Numbers and letters in parentheses in the text For easier valve movement install a swivel A at the refer to the numbers and letters in the figures and valve inlet Parts Drawing Connect a grounded fluid hose to the
11. mponents can inject fluid into your body and cause extremely serious injury including the need for amputation Fluid splashed in the eyes or on the skin can also cause serious injury Fluid injected into the skin might look like just a cut but it is a serious injury Get immediate medi cal attention Do not point the valve at anyone or at any part of the body Do not put your hand or fingers over the spray tip Do not stop or deflect leaks with your hand body glove or rag Do not blow back fluid this is not an air spray system Always have the tip guard and the trigger guard on the valve when dispensing Be sure the safety knob operates before dispensing Lock the safety knob when you stop dispensing Follow the Pressure Relief Procedure on page 8 whenever you are instructed to relieve pres sure stop spraying clean check or service the equipment and install or clean the spray tip Tighten all 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 Use only Graco approved hoses Do not remove any spring guard that is used to help protect the hose from rupture caused by kinks or bends near the couplings 307 756 3 44 WARNING FIRE AND EXPLOSION HAZARD Improper grounding poor ventilation open flames or sparks can cause a hazardous condition and result
12. ocedure on page 8 1 Relieve the pressure 2 Unscrew the safety knob assembly 4 3 Hold the adjusting nut 13 with an adjustable wrench See the Parts Drawing on page 12 Then thread the capscrew 1 a few turns into the adjust ing nut 4 Push the adjusting nut 13 forward as far as possible and check for 1 8 5 16 in 3 8 mm free play See Fig 3 Adjust the screw as necessary and then tighten the adjusting nut 5 Screw the safety knob 4 into the valve If necessary disassemble and repair the valve as instructed on page 11 9 Oil daily 18 Oil daily 04884 Free Play 1 8 5 16 in 3 8 mm Fig 3 Service Before you start Be sure all the necessary repair parts are available A packing repair kit Part No 220 445 is available For the best results use all the parts in the repair kit Disassembly 44 WARNING To reduce the risk of serious injury whenever you are instructed to relieve pressure always follow the Pressure Relief Procedure on page 8 1 Relieve the pressure Then disconnect the fluid hose and dispensing device 2 Unscrew the valve seat 19 See the Parts Draw ing on page 12 Unscrew the pivot screw 9 and remove the trigger 15 3 Grasp the hex of the safety knob 4 with a 11 16 in open end wrench and unscrew the knob as sembly from the valve body 4 Grasp the flats of the adjusting nut 13 with an adjustable wrench and pull it out far enough
13. operly grounded Refer to Grounding on page 6 Relieve the pressure and remove the spray tip if used from the valve Always use the lowest possible fluid pressure and maintain firm metal to metal contact between the valve and pail during flushing to reduce the risk of fluid injection static sparking or splashing Use this cleanup procedure at the end of each work day 1 Relieve the pressure 2 Remove the spray tip if used 3 Flush the pump sprayer and system as instructed in your separate pump sprayer manual 4 Ifyou are using an adjustable extension pump it in and out several times during flushing then extend it and leave it extended while completing the flushing 44 CAUTION To avoid corrosion never leave water or water based fluid in the valve overnight or longer If flushing with water be sure to follow the water with mineral spirits to protect the valve and packings from corrosion Troubleshooting If the valve keeps spraying after the trigger is released the valve rod 18 may be obstructed worn or dam aged or may need adjusting 10 307 756 To check for proper needle adjustment engage the safety knob 4 and check the trigger free play It should be 1 8 5 16 in 3 8 mm See Fig 3 If it is not adjust the needle as follows Adjusting the Needle A WARNING To reduce the risk of serious injury whenever you are instructed to relieve pressure always follow the Pressure Relief Pr
14. r malfunction and result in serious injury nz 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 14 for the maximum working pressure of this equipment Do not exceed the maximum working pressure of the lowest rated system component This equip ment has a 3000 psi 21 0 MPa 210 bar maximum working pressure Use fluids and solvents which are compatible with the equipment wetted parts Refer to the Tech nical Data section of all equipment manuals Read the fluid and solvent manufacturer s warnings 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 Comply with all applicable local state and national fire electrical and safety regulations 2 307 756 44 WARNING INJECTION HAZARD Spray from the valve hose leaks or ruptured co
15. valve open until you area ready to or install or clean the spray tip nozzle use the system again 1 Engage the valve safety knob If you suspect that the valve hose application device or spray tip is completely clogged or that pressure has 2 Shut off the power supply to the pump and open not been fully relieved after following the steps above any air bleed valves in the system very slowly loosen the tip guard retaining nut outlet accessory nut or hose end coupling and relieve pres 3 With an electric sprayer also unplug the power sure gradually then loosen completely Now clear the cord tip or hose obstruction 8 307 756 Operation Startup A WARNING To reduce the risk of serious injury including fluid injection splashing in the eyes or on the skin or injury from moving parts always follow the Pres sure Relief Procedure on page 8 before check ing or servicing any part of the system when installing cleaning or changing spray tips and whenever you stop spraying Whenever you stop spraying even for a moment always engage the valve safety knob See Fig 2 and instructions at right Failure to turn the safety knob can result in the accidental triggering of the valve 44 WARNING The wallet sized warning card provided with this valve should be kept with the operator at all times The card contains important treatment information should a fluid injection injury occur Additional cards are available at no
16. ys follow the Pressure Relief Procedure on page 8 8 Screw the safety knob 4 into the valve 9 Screw the valve seat 19 into the front of the valve and torque to 20 25 ft lb 27 34 Nem Be sure the washer 3 is in place between the seat and trigger guard 10 Tighten the packing screw 14 just enough to stop leakage over tightening will result in leaking 307 756 11 a 10 Lips of V packings 7 must face front of valve 16 19 Torque to 20 25 ft lb 27 34 N m 7524A 12 307 756 Ref No 12 Part No 104 301 151 395 168 845 210 170 172 479 179 761 162 453 165 086 165 672 165 674 165 675 Description CAPSCREW soc hd 5 40 x 5 8 WASHER flat GASKET copper SAFETY KNOB trigger TAG instruction not shown TAG warning not shown NIPPLE hex 1 4 npsm x 1 4 npt 1 3 16 long SCREW handle pivot V PACKING PTFE GLAND female brass GLAND male brass Qty aaa o 21 24t Part No 165 676 165 677 190 660 181 595 205 629 220 228 224 707 110 037 179 960 Description NUT adjusting SCREW packing TRIGGER valve HOUSING valve control ROD valve SEAT valve GUARD trigger Includes warning plate SCREW ph hd mach 310 24 x 1 2 CARD warning not shown Supplied in Repair Kit 220 445 T Extra warning cards and tags can be ordered from Graco at no charge 307 756 Qty 4 4 13 Technical Data Category Data
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