Table of Contents
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Instructions–Parts List
STAINLESS STEEL,
WATERBASE-COMPATIBLE, HIGH PRESSURE
Fluid Pressure Regulators
For precise downstream pressure and flow control.
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
See page 2 for List of Models and Table of Contents.
Model 238890,
238892
(spring-operated)
U.S. Patent No. 4942899
06290
308647N
06288
Model 238894
(air-operated)
06540A
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Table of Contents
Related Manuals for Graco 238890
Summary of Contents for Graco 238890
- Page 1 For precise downstream pressure and flow control. Important Safety Instructions Read all warnings and instructions in this manual. Save these instructions. See page 2 for List of Models and Table of Contents. 06290 06288 Model 238894 Model 238890, (air-operated) 238892 (spring-operated) U.S. Patent No. 4942899 06540A...
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Page 2: Table Of Contents
........Parts 238889, 238890, 238891, and 238892 .. -
Page 3: Warnings
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. Use only genuine Graco parts and accessories. - Page 4 Consult your fluid suppliers to ensure that the fluids used are compatible with aluminum parts. TOXIC FLUID HAZARD Graco does not manufacture or supply the reactive chemical components that may be used in this equipment and is not responsible for injury or property loss, damage, expense or claims (direct or consequential) that arise from the use of such chemical components.
- Page 5 Notes 308647...
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Page 6: Installation
Contact your 3/8 npt(f) inlet. Connect the line from the gun (J) to the Graco distributor for assistance in designing a system fluid regulator’s 3/8 npt(f) outlet. Install the gauge or to suit your needs. - Page 7 Installation Grounding the System Spray gun: Ground through connection to a properly grounded fluid hose and pump. WARNING Fluid supply container: Follow your local code. FIRE AND EXPLOSION HAZARD Object being sprayed: Follow your local code. Before operating the fluid pressure regulator, ground the system as Solvent pails used when flushing: Follow your local explained below.
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Page 8: Operation
Operation Adjusting the System Pressure 2. Adjust the pump air pressure and fluid regulator for CAUTION the desired spray pattern. Use the lowest possible air and fluid pressures for your application. For D The new system must be cleaned and tested optimum performance, the inbound fluid pressure thoroughly before admitting fluid to the regulator should be at least 500 psi (3.4 MPa, 34 bar) above... - Page 9 Operation Flushing 4. Open the fluid regulator fully. D Flush before changing colors, before fluid can dry in a. Spring Operated Regulators Only: Open the the equipment, at the end of the day, before storing, fluid regulator by turning the adjusting screw and before repairing equipment.
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Page 10: Troubleshooting
Troubleshooting NOTE: Check all possible solutions in the chart below WARNING before you disassemble the regulator. To reduce the risk of serious bodily injury, including skin injection, splashing in the eyes or on the skin, or injury from moving parts, always follow the Pres- sure Relief Procedure on page 5 whenever the pump is shut off, before installing, cleaning, adjust- ing, removing, or servicing the valve or any part of... -
Page 11: Service
Service Service Kits Installing the Air-Operated Conversion Kit (See Parts Drawings on pages 14–16) For the Fluid Diaphragm Repair Kit, order Part 238747. Parts included in this kit are marked with an asterisk, 1. Relieve the pressure. for example (7*), in the Parts Drawings and Lists on pages 14 and 16. - Page 12 Service Replacing the Fluid Diaphragms 6. Remove the o-ring (17) from the groove in the base housing (4), clean and inspect the base See Fig. 3, and follow the steps below. For parts that housing, and replace if necessary. are not called out in Fig. 3, see the Parts Drawing on page 14.
- Page 13 Service Replacing the Cartridge NOTE: The retaining nut (3) often loosens when removing the cartridge assembly from the base See Fig. 3, and follow the steps below. For parts that housing. Be sure to re–torque as described in are not called out in Fig. 3, see the Parts Drawing on step 4.
- Page 14 Parts Drawing Models 238889, 238890, 238891, and 238892 238889 with EZ Flush gauge port plug 238891 with EZ Flush gauge port plug 238890 with fluid pressure gauge 238892 with fluid pressure gauge Spring-Operated Regulator Spring-Operated Regulator 500 to 3000 psi (3.4 to 21 MPa, 34 to 207 bar)
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Page 15: Description
Parts List Models 238889, 238890, 238891, and 238892 Ref. Part No. Description Qty. Ref. Part No. Description Qty. ACTUATOR 107079 O-RING, packing; PTFE 019 238858 COVER, spring O-RING, packing; PTFE 013 191577 NUT, spring retainer 109450 O-RING, packing; PTFE 016 191578 BASE HOUSING;... - Page 16 Parts Drawing Models 238893, 238894, 248090, and 255072 238893 with EZ Flush gauge port plug 238894 with fluid pressure gauge 248090 with fluid pressure gauge for LASD material 255072 High Resolution Air-Operated Regulator 100 psi (0.7 MPa, 7 bar) Maximum Inbound Air Pressure 500 to 4000 psi (3.4 to 28 MPa, 34 to 276 bar) Regulated Fluid Outlet Pressure DETAIL OF MODEL 248090...
- Page 17 Parts List Models 238893, 238894, 248090, and 255072 Ref. Ref. Part No. Description Qty. Part No. Description Qty. ACTUATOR 21{n 111858 SPRING, compression 191584 HOUSING ADAPTER 160062 SPRING, stabilizing 191577 NUT, spring retainer 113654 GAUGE, pressure 191578 HOUSING, base, for Models for Models 238894 and 248090 238893 and 238894 15U746...
- Page 18 Parts Drawing Model 244734 244734 with EZ Flush gauge port plug Air-Operated Regulator, Full Range 100 psi (0.7 MPa, 7 bar) Maximum Inbound Air Pressure 500 to 4000 psi (3.4 to 28 MPa, 34 to 276 bar) Regulated Fluid Outlet Pressure Torque to 25 to 30 in-lb (2.8 to 3.4 NSm).
- Page 19 Parts List Model 244734 Ref. Ref. Part No. Description Qty. Part No. Description Qty. ACTUATOR 107079 O-RING, packing; PTFE 019 191584 HOUSING ADAPTER O-RING, packing; PTFE 013 191577 NUT, spring retainer 109450 O-RING, packing; PTFE 016 197952 REGULATOR HOUSING 111858 SPRING, compression 191579 VALVE HOUSING;...
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Page 20: Range
Technical Data Model 238890 Model 238892 Models 238894, Model 244734 spring operated, with spring operated, with 248090, and 255072 air operated, with fluid pressure gauge fluid pressure gauge air operated, with pressure sensor fluid pressure gauge fluid pressure gauge ports... -
Page 21: Performance Chart
Performance Chart Fluid Pressure Regulators, Models 238889 through 238894 and 248090 (MPa, bar) 6000 (41, 414) 5000 (34, 345) 4000 (28, 276) 3000 (21, 207) 2000 (14, 138) 1000 (7, 69) (lpm) (1.9) (3.8) (5.7) (7.6) FLUID FLOW Test Conditions 65 cp oil Regulators tested in oil at 70_ F (21_ C) and at 3000 cp oil... - Page 22 Notes 308647...
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Page 23: Dimensional Drawings
Dimensional Drawings Models 238889 and 238891 with port plug Models 238890 and 238892 with gauge (spring operated) Height: 8.9 in. (225 mm) 3/8 npt inlet Diameter of base housing: 2.65 in. (70 mm) port 3/8 npt outlet port 1/4 npt... -
Page 24: Graco Standard Warranty
With the exception of any special, extended, or limited warranty published by Graco, 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 defective.