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Instructions/Parts List
High Pressure
Fluid Regulators
309475F
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
II 2 G
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Contents List of Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Operation . . . . . .
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List of Models List of Models Part No. Series Model Type Maximum Fluid Inlet Pressure Regulated Pressure Range 233760 B P60-VP DN7 Pneumatic 5000 psi (36 MPa, 360 bar) 70-900 psi 234266 B P60-VP DN7 npt (0.5-6 MPa, 5-60 bar) 233767 B P200-VM Mechanical 5000 psi (36 MPa, 360 bar) 1300-3000 psi 234264 B P200-VM npt (9-20 MPa, 90-200 bar) 233768 B P200-VM Mechanical 5000 psi (36 MPa, 360 bar) 1300-4000 psi 234265 B P200-VM npt (9-27 MPa, 90-270 bar) 233769 B P150-VP DN7 Pneumatic 5000 psi (36 MP
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Warning WARNING EQUIPMENT MISUSE HAZARD Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury. • 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 not sure, call your Graco distributor. � Do not alter or modify this equipment. Use only genuine Graco parts and accessories. � Check equipment daily. Repair or replace wo
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Warning WARNING SKIN INJECTION HAZARD Spray from the gun, hose leaks, or ruptured components can inject fluid into your body and cause an extremely serious injury, including the need for amputation. Splashing fluid in the eyes or on the skin can also cause serious injury. � Fluid injected into the skin might look like just a cut, but is a serious injury. Get immediate surgical treatment. � Do not point the gun at anyone or at any part of the body. Do not put your hand or fingers over the spr
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Introduction Introduction A fluid pressure regulator is used in air-assisted spray Models 233767, 233814, 233768, 234260, 234264, and systems to ensure accurate, positive control of fluid 234265 (FIG. 2.) are mechanically operated fluid pres- pressure to a spray gun, dispensing valve, or atomizing sure regulators designed primarily for use with low to head. medium viscosity fluids. A regulator installed at a circulating line take-off or pump Models 233760, 233769, 233770, 233813, 234259, red
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Introduction Adjus Adjus Adjust t tme me ment kn nt kn nt knob ob ob Spring Valve plunger Fluid inlet Fluid outlet (from pump) (to gun) TI1769A Fig. 2. Cutaway of Mechanical Fluid Pressure Regulator Air Inlet Diaphragm Valve plunger Fluid Outlet Fluid Inlet (To gun) (From pump) TI1774A Fig. 3. Cutaway of Pneumatic Fluid Pressure Regulator 309475F 7 TI1769A
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Installation Installation 1. Install one regulator for each spray gun. b. Install a back pressure regulator downstream of the gun. Connect the fluid return line from the 2. Apply thread sealant to connections as necessary. gun to the inlet of the back pressure regulator. Connect the fluid return line to the pump to the 3. Make sure that the direction of fluid flow agrees with the flow direction markings on the regulator body. regulator’s outlet. a. Install a fluid pressure regulator upstre
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Installation A B L Air in F C D to pump Air in to gun H Y B H E K Z Fluid M G J G Fluid in TI1763C Fig. 4. High pressure, non-circulating system, mechanical fluid regulator Key G Fluid drain valve H Fluid shut-off valve A Air line filter J Mechanical fluid pressure regulator B Bleed-type air shut-off valve K Fluid pressure gauge C Pump air regulator L Air-assisted spray gun D Gun air regulator M Fluid filter E Fluid hose Y Pump ground wire FPump Z Whip hose 309475F 9
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Installation A B A B L N Air to Pump Air to Fluid D C Regulator F Air to Gun B E Y K Z Fluid H G M J G TI1764C Fig. 5. High pressure, non-circulating system, pneumatic fluid regulator Key J Pneumatic fluid regulator A Air line filter K Fluid pressure gauge B Bleed-type air shut-off valve LGun C Pump air regulator M Fluid filter D Gun air regulator N Air regulator to operate/adjust fluid regulator E Fluid hose Y Pump ground wire FPump Z Whip hose G Fluid drain valve H Fluid shut-off valve 10
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Installation B Air supply D H A Air to Fluid in gun to gun L J P H TI1765A Fig. 6. High Pressure circulating system mechanical fluid regulator and back pressure regulator Key J Mechanical fluid regulator A Air line filter LGun B Bleed-type air shut-off valve P Mechanical back pressure regulator D Pump air regulator H Fluid shut-off valve 309475F 11
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Installation 12 309475F
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Operation Operation Flush Before First Use Adjusting the Regulator Your pressure regulator has been tested in the factory The fluid pressure regulator controls pressure down- with an anti-corrosion liquid. Before using the regulator, stream from its outlet. The inlet fluid pressure should thoroughly flush the system with a solvent to remove always be higher than the outlet fluid pressure. residue of this liquid as well as any contaminants that have been introduced during assembly of the system
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Troubleshooting Troubleshooting Relieve the pressure (page 13) before checking or repairing the equipment. To repair the regulator, refer to page 15. Problem Cause Solution Drop in fluid outlet pressure. Ruptured diaphragm (17) (pneu- Replace diaphragm. matic regulators only). Air escaping (pneumatic regulators Check air hose and connections. only). Replace packings (13). Worn packings. Replace packings (13). Fluid outlet pressure increases to Valve ball (8) and seat (4) are worn or Clean ball
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Maintenance Maintenance Do not allow paint or solvent to sit in the system for Flushing extended periods. Fluid could dry on the plunger and cause leakage at the plunger packings. If leakage occurs, disassemble and clean the regulator. WARNING Cleaning and Repair When changing fluids or colors, the regulator should be The system pressure must be manually relieved to disassembled and cleaned. Regular cleaning and prevent the system from starting or spraying acciden- inspection of the intern
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Parts Parts Mechanical Regulators Part Nos. 233767 (shown), 233768, 233814, 234260, 234264, and 234265 26 26 14 24 13 12 23 15 21 9 1 1 20 6 25 4 16 5 8 19 7 27 3 16 2 10 1 Torque to 25 N�m (18.5 ft-lb). 11 16 309475F
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Parts Mechanical Regulators Part Nos. 233767 (shown), 233768, 233814, 234260, 234264, and 234265 Ref. Part No. Description Qty No. Ref. Part No. Description Qty No. 14 15A149 GLAND, female 1 1 HOUSING, lower 1 15 117125 RING, retaining, internal 1 16 15A178 PLATE, spring 2 HOUSING, lower (for npt version) 1 2 15A238 PLUG, screw 1 19 117093 SPRING, compression; for 1 233814 and 234260 3 117089 SPRING, compression 1 117094 SPRING, compression; for 1 4 245367 SEAT, valve 1 233767, 233768, 234264,
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Parts Mechanical Back Pressure Regulators Part Nos. 233771, 233772, 234268, and 234269 (shown) 26 10 26 11 24 14 13 23 12 21 15 9 1 20 1 6 25 4 16 5 27 19 2 16 1 Torque to 25 N�m (18.5 ft-lb). 18 309475F
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Parts Mechanical Back Pressure Regulators Part Nos. 233771, 233772, 234268, and 234269 Ref. Part No. Description Qty No. Ref. Part No. Description Qty No. 15 117125 RING, retaining, internal 1 1 HOUSING, lower 1 16 15A178 PLATE, spring 2 19 117093 SPRING, compression; for 1 HOUSING, lower (for npt version) 1 233771 and 234268 2 15A238 PLUG, screw 1 117094 SPRING, compression; for 1 4 245367 SEAT, valve 1 233772 and 234269 5 15Y030 O-RING 1 20 15A192 HOUSING, upper 1 6 15Y031 O-RING 1 21 117103
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Parts Pneumatic Regulators Part No. 233813 and 234259 1 Torque to 10 N�m (7.5 ft-lb). 1 26 29 30 9 20 11 11 17 1 16 6 4 5 8 7 18 27 3 14 2 13 TI1749A 12 15 20 309475F
