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Graco H Series Instructions-Parts List Manual
Graco H Series Instructions-Parts List Manual

Graco H Series Instructions-Parts List Manual

Low pressure fluid regulator

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Instructions–Parts List
LOW PRESSURE
Fluid Regulator
For accurate, positive control of fluid pressure to one spray gun,
dispensing valve, or atomizing head. For professional use only.
250 psi (18 bar, 1.8 MPa) Maximum Inbound Pressure
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
Model 203831 Series H
0–60 psi (0–4 bar, 0–0.4 MPa) Regulated Pressure
Gives positive control of fluid pressures in most normal
direct supply and circulating spray systems.
Model 204500 Series H
0–15 psi (0–1 bar, 0–0.1 MPa) Regulated Pressure
Has a counterbalance spring for positive closure at
extremely low pressures.
Model 204501 Series H
20–160 psi (1.5–11 bar, 0.15–1.1 MPa) Regulated
Pressure
Has a heavier spring for precise control of fluid in the
regulated range.
Model 205425 Series H
0–60 psi (0–4 bar, 0–0.4 MPa) Regulated Pressure
has a large valve for more viscous fluids. Not intended
for use with standard paints and lighter viscosity fluids,
as these fluids lower the sensitivity of this regulator.
Get other manuals https://www.bkmanuals.com
306563K
ENG
03367

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Summary of Contents for Graco H Series

  • Page 1 Instructions–Parts List LOW PRESSURE 306563K Fluid Regulator For accurate, positive control of fluid pressure to one spray gun, dispensing valve, or atomizing head. For professional use only. 250 psi (18 bar, 1.8 MPa) Maximum Inbound Pressure Important Safety Instructions Read all warnings and instructions in this manual. Save these instructions.
  • Page 2 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 not sure, call your Graco distributor . D Do not alter or modify this equipment.
  • Page 3 WARNING SKIN INJECTION HAZARD Spray from the gun, leaks or ruptured components 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. D Fluid injected into the skin is a serious injury.
  • Page 4 WARNING FIRE AND EXPLOSION HAZARD Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and re- sult in a fire or explosion and serious injury. D If there is any static sparking or you feel an electric shock while using this equipment, stop spray- ing immediately.
  • Page 5 Installation Regulator Dispensing Unit Gauge Regulator Inlet Regulator Outlet Air Regulator Supply Line Accessory Outlet 03363 Fig. 1 TYPICAL INSTALLATION D Mount the regulator in an upright position so that the gauge (C) can be easily read. CAUTION D If turning the gauge, reapply sealer to the threads, and use a wrench on the inlet stud to turn gauge.
  • Page 6 Operation CLEANING THE REGULATOR WARNING Note: Flush the regulator every four weeks, or as To reduce the risk of component rupture, which necessary for the amount and type of use. can cause a fire or explosion and result in 1. Clear regulator of paint or other fluid by blowing serious bodily injury, including splashing in the back fluid through the gun and hose.
  • Page 7 Troubleshooting Problem Cause Solution No pressure regulation Damaged diaphragm Replace diaphragm (31). Fluid leaks under cap Loose cap, worn gasket Tighten screws (1), replace gasket (32). Damaged diaphragm Replace diaphragm (31). Pressure creeps above setting Loose cap Tighten screws (1). Worn gasket Replace gasket (32).
  • Page 8 Service Regulator Disassembly See TOP VIEW for tightening sequence. Lubricate with oil. Shut off pump, close shutoff valve and relieve pressure in regulator by triggering the spray gun. Remove the Lubricate with grease. regulator from the system. Torque to 20 ft-lb (27 NSm). 1.
  • Page 9 Notes 306563 Get other manuals https://www.bkmanuals.com...
  • Page 10 Parts See torque sequence in Fig. 3. Lubricate with grease. PTFE side down. Apply sealant to threads. Torque to 70–80 in-lb (8–9 NSm). Lubricate with oil. Torque to 30–35 ft-lb (41–47 NSm) 03374 Fig. 4 306563 Get other manuals https://www.bkmanuals.com...
  • Page 11 Parts Part No. Description Qty. Part No. Description Qty. 101682 SCREW, soc hd cap; 1/4–20 x 5/8 171194 CAP, regulator 101754 PLUG, pipe; hex soc; 3/8 npt 162485 ADAPTER; 3/8 npt x 3/8 npsm 101971 RACE, thrust; adjusting nut 164863 SCREW, adjusting 101972 BEARING, needle thrust...
  • Page 12 Graco distributor to the original purchaser for use. 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 defec- tive.

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