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Graco 255278 manual

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Table of contents for the manual

  • Page 1

    313343A Instr uctions-P ar ts High Flo w Se vere Duty Shutoff Chec k Va l v e For recirculation v alves, shu toff check v alves, or outle t shutoff check v alves on XM plural-component spray ers. P ar t No. 255278 Complete high flo w sev ere duty shutoff check v alve assemb ly 7250 psi (50 MP a, 500 bar) Maximu m Working Pressure 160°F (71°C) Max[...]

  • Page 2

    Related Manua ls 2 313343A Contents Related M anuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 W arnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Re[...]

  • Page 3

    Warnings 313343A 3 Wa r n i n g s The f ollowing warnings are f or the setup , use, grounding, maintenance , and repair of this equipment. The e xclama- tion point symbol ale r ts you to a ge neral warning and the hazard symbol ref e rs to proc edure-specific risk. Ref er back to these wa r nings. Additional, product- specific warnings ma y be foun[...]

  • Page 4

    Overview 4 313343A Overview The high flo w sev ere duty shutoff chec k valv e is a valv e that acts as a spring loaded one-w ay chec k valv e when the v alve is in the open posit ion. When the handle is turned to the closed position, the ball is he ld against the seat closing flo w in either direction. T he valv e can be manif old mounted with f ou[...]

  • Page 5

    Overview 313343A 5[...]

  • Page 6

    Setup 6 313343A Setup Ref erenc e par ts illustration on page 7. 1. Mount the v alve in place with two outlet por t s pointed in the de sired direction using o -r ing (14) and f our sc rews (11). 2. Plug the un-used out let por t with plug (15). Use thread tape o r sealant on the npt thread s. 3. Use ha ndle (12) to c lose the valve stem (8) clock-[...]

  • Page 7

    Parts 313343A 7 Pa r t s * Included in shutoff chec k valv e car tr idge 255747. ◆ Included in shutoff chec k valv e repair kit 256239 (purchase separa tely). See page 8 f or par ts included in kit. T orque to 125 ft-lbs. (170 N•m) Apply blue threadloc k. Apply lithium grease . T orque to 16-20 ft-lbs. (22-27 N•m) 1 2 3 4 10 1 12 13 5 4 3 2 1[...]

  • Page 8

    Troubleshooting 8 313343A T roub leshooting Repair Kit 256239, Shutoff Check V alve Repair Kit See par ts illustration on page 7. † Not shown. Accessories Handles 15R529, Fluid Inlet Block Used on XM outlet to moun t high flow se vere duty shut-off ch eck v alve when mix manifold is remote. See manual 3127 49 for parts. 256980, XM Remote Mix Mani[...]

  • Page 9

    Technical Data 313343A 9 Te c h n i c a l D a t a Loctite ® is a registere d trademark of th e Loctite Cor poration. Mounting Dimensions Maximum Fluid Working Pre ssure . . . . . . . . . . . . . . . . . . 7250 psi (50 MP a, 5 00 bar) Maximum Fluid T emperature . . . . . . . . . . . . . . . . . . . . . . 16 0°F (71°C) Check V alve Housing Fluid P[...]

  • Page 10

    All written and visual data contained in this document reflects the latest product information available at the time of publica tion. Graco reserves the right to make changes a t any time without notice. This manual contains English. MM 313343 Graco Headquarters: Minneapolis International Offices: Belgium, China, Japan, Korea GRACO INC. P.O. BOX 14[...]