Graco 307751F User's Manual
Contents
1. INSTRUCTIONS PARTS LIST gt 307 751 This manual contains IMPORTANT GRACO Rev F WARNINGS AND INSTRUCTIONS Supersedes E READ AND RETAIN FOR REFERENCE Tamper Resistant CIRCULATING Y RESTRICTOR VALVE 300 psi 21 bar MAXIMUM INBOUND FLUID PRESSURE Restricts fluid flow to the gun in a circulating system Compatible with water base fluids Model 223 617 Series B 1 4 npsm inlet and return ports Twist lock coupler Model 223 618 Series B 3 8 npsm inlet and return ports Twist lock coupler Model 223 619 Series B 1 4 npsm inlet and return port 3 8 npsm swivel coupler Model 223 620 Series B 3 8 npsm inlet and return ports 3 8 npsm swivel coupler 204 891 Accessory Coupler Stem 223 618 Twist Lock Coupler U S Patent No 4 615 485 U K Patent No 2 176 265 Foreign Patents Pending WETTED PARTS Stainless steel Acetal Homopolymer PTFE INSTALLATION amp OPERATION WARNING This valve is for use ONLY in low pressure circulat ing systems To reduce the risk of serious bodily injury which could result from over pressurizing and rupturing the valve NEVER supply more than 300 psi 21 bar fluid pressure to the valve To reduce the risk of splashing always relieve the air and fluid pressure to the gun before removing this valve for any reason Connect the circulating fluid hoses to the valve Connect the valve to the gun For twist lock couplers align the pins on the stem with the2. R 1 4 npsm Model 223 617 2 180 403 ADAPTER 3 8 npsm Model 223 618 2 2 220 103 CARTRIDGE packing Includes items 2a to 2e 1 2a 178 846 SEAL 1 2b 178 848 SEAT ball 1 2c 111 279 BALL 1 2d 168 890 SPRING compression 1 2e 181 282 SLEEVE 1 3 178 847 GUIDE coupler stem 1 4 186 202 HOUSING coupling 1 5 186 203 NUT coupling 1 Model 223 619 and 223 620 Series A With Swivel Coupler REF NO PART NO DESCRIPTION QTY 171 234 ADAPTER 1 4 npsm Model 223 619 2 180 403 ADAPTER 3 8 npsm Model 223 620 2 6 223 892 UNION 3 8 npsm swivel x 3 8 npt f 1 7 181 283 CARTRIDGE packing 1 Keep on hand to reduce down time ACCESSORIES Accessories must be purchased separately Adjustment Tool 220 102 Required for adjusting the restrictor valve Coupler Stem 204 891 Required to adapt the 3 8 npsm m fluid inlet of the air spray gun for use with twist lock coupler Sales Offices Atlanta Chicago Dallas Detroit Los Angeles Mt Arlington N J Foreign Offices Canada England Korea Switzerland France Germany Hong Kong Japan GRACO INC P O BOX 1441 PRINTED IN U S A 2 307751F MINNEAPOLIS MN 55440 1441 307 751 10 85 Revised 3 93
3. coupler slots and push the coupler onto the stem Turn the stem clockwise to lock it To adjust the fluid flow insert the adjustment tool A as Fig 1 shown in Fig 1 Turn the tool clockwise to decrease flow and counterclockwise to increase flow GRACO INC P O BOX 1441 MINNEAPOLIS MN 55440 1441 COPYRIGHT 1990 GRACO INC SERVICE Before removing the restrictor from the system shut off the power to the pump and relieve air and fluid pressure Remove the coupler from the valve Pry out the packing cartridge 2 or 7 See Parts Drawing Thoroughly clean the valve and install a new cartridge Reinstall the cou pler If your valve has a twist lock coupler position the slot in the housing on the center line of the valve See Fig 2 Tighten the nut 5 firmly to 15 to 25 ft lb 20 to 34 Nem If you are replacing the inlet and return adapters 1 ap ply thread sealant to the threads of the new adapters be fore installing and torque to 15 to 25 ft lb 20 to 34 Nem See Parts Drawing S Torque to 15 to 25 ft lb 20 to 34 Nem Fig 2 PARTS DRAWING AND LIST ol Torque to 15 to 25 ft lb 20 to 34 Nem A ow N w bdldiddd 2c 2d 2 2 ey e Ne Not Sold Separately 1 Apply sealant Torque to 15 to 25 ft lb 20 to 34 Nem SERVICE NOTE Series letter changed on all models Model 223 617 and 223 618 Series A With Twist lock Coupler REF NO PART NO DESCRIPTION QTY l 171 234 ADAPTE
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