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Graco 236770 manual

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Table of contents for the manual

  • Page 1

    ST AINLESS STEEL, W A TERBASE COMP A TIBLE Back Pressure Regulator For use in circulating systems to provide regulated back pressure to spray gun(s) and to maintain proper system pressure. Model 237503 is the back pressure regulator only . Model 236770 includes the gauge, tube, inlet adapter and outlet swivel union. 300 psi (21 bar , 2.1 MPa) Maxim[...]

  • Page 2

    2 308401 W ARNING INSTRUCTIONS EQUIPMENT MISUSE HAZARD Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury . D This equipment is for professional use only . D Read all instruction manuals, tags, and labels before operating the equipment. D Use the equipment only for its intended purpose. If you are uncert[...]

  • Page 3

    308401 3 Installation Fig. 1 KEY A Flu id Supply Line B Air Spray Gun C Fluid Pressure Regulator D Air Supply Line E Adjusting Screw F Back Pressure Regulator (236770 shown) G Fluid Return Line H Ball V alve A B C D E F G 03506 H Installing the Back Pressure Regulator CAUTION Handle the back pressure valve with care to avoid damaging the diaphragm.[...]

  • Page 4

    4 308401 Service Pressure Relief Procedure W ARNING PRESSURIZED EQUIPMENT HAZARD The system pressure must be manually relieved to prevent the system from starting or spraying acci- dentally . T o reduce the risk of an injury from acci- dental spray from the gun, splashing fluid, or moving parts, follow the Pressure Relief Proce- dure whenever you: [...]

  • Page 5

    308401 5 Parts 8 11 9 3 7 13 14 20 12 1 2 17 10 19 18 1 2 3 5 15 6 03504 4 Ref. No. Part No. Description Qty . 12 189816 PLA TE, backup 1 13 177432 PLA TE, support, diaphragm 1 14 n 177431 DIAPHRAGM 1 15 1 12844 SCREW , adjusting, 1/2–20 x 1 1–5/8 long 17 236892 UNION, adapter; 1/2–14 npt(m) 1 x 3/8–18 npsm(f) swivel 18 16C760 ADAPTER, inle[...]

  • Page 6

    6 308401 Notes[...]

  • Page 7

    308401 7 Dimensions 3/8 npsm(f) Outlet 2.25 in. (57.2 m m diameter 7.25 in. (184 mm) Model 236770 shown 03505 3/8 npsm(m) Inlet Fig. 2 Manual Change Summary Assembly Changed Part Status Ref. No. Part N o. Name 236770 and 237503, to Series B Old New 20 20 187873 187876 Gauge Gauge Maximum inbound pressure is increased to 300 psi (21 bar , 2.1 MPa). [...]

  • Page 8

    8 308401 The Graco W arranty and Disclaimers Graco warrants all equipment listed in this manual which is manufactured by Graco and bearing its name to be free from defects in ma t er i al 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 wa[...]