Graco 238890 Instructions-Parts List Manual
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Graco 238890 Instructions-Parts List Manual

Graco 238890 Instructions-Parts List Manual

Fluid pressure regulators
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Instructions-Parts
Fluid Pressure
Regulators
Stainless Steel, Waterbase-Compatible,
High-Pressure
For precise downstream pressure and flow control to dispensing devices. For professional
use only.
See page 3 for model information, including maximum working pressure.
Important Safety Instructions
Read all warnings and instructions in this
manual before using the equipment.
Save these instructions.
Model 238890, 238892
(spring-operated)
Model 26A086
(acid-compatible)
U.S. Patent No. 494899
06290
308647U
Model 238894
(air-operated)
EN

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Summary of Contents for Graco 238890

  • Page 1 See page 3 for model information, including maximum working pressure. Important Safety Instructions Read all warnings and instructions in this manual before using the equipment. Save these instructions. 06290 Model 238894 Model 238890, 238892 (air-operated) (spring-operated) Model 26A086 (acid-compatible) U.S. Patent No. 494899...

  • Page 2: Table Of Contents

    Flushing Procedure ..... . 11 Graco Standard Warranty....26 Troubleshooting .

  • Page 3: Models

    Models Spring-Operated Maximum Fluid Inlet Regulated Fluid Outlet Part No. Description Range Pressure Pressure 238890 with fluid pressure gauge Medium 6000 psi 500–3000 psi (41 MPa, 414 bar) (3.4–21 MPa, 34–207 bar) 238891 with EZ Flush gauge port plug High 6000 psi 3000–5000 psi...

  • Page 4: Safety Symbols

    Safety Symbols Safety Symbols The following safety symbols appear throughout this manual and on warning labels. Read the table below to understand what each symbol means. Symbol Meaning Symbol Meaning Read Manual Chemical Hazard Follow Pressure Relief Procedure Equipment Misuse Hazard Ventilate Work Area Fire and Explosion Hazard Wear Personal Protective...

  • Page 5: General Warnings

    General Warnings General Warnings The following warnings apply throughout this manual. Read, understand, and follow the warnings before using this equipment. Failure to follow these warnings can result in serious injury. WARNING SKIN INJECTION HAZARD High-pressure fluid from gun, hose leaks, or ruptured components will pierce skin. This may look like just a cut, but it is a serious injury that can result in amputation.
  • Page 6 General Warnings WARNING PRESSURIZED ALUMINUM PARTS HAZARD Use of fluids that are incompatible with aluminum in pressurized equipment can cause serious chemical reaction and equipment rupture. Failure to follow this warning can result in death, serious injury, or property damage. •...

  • Page 7: Important Acid Catalyst Information

    Important Acid Catalyst Information Important Acid Catalyst Information two-component, wood-finishing Regulator model 26A086 is designed for acid catalysts (“acid”) currently used in materials. Current acids in use (with pH levels as low as 1) are more corrosive than earlier acids. More corrosion-resistant wetted materials of construction are required, and must be used without substitution, to withstand the increased corrosive properties of these acids.

  • Page 8: Installation

    Installation Installation Do not use PTFE tape on pipe threads. Such use could cause a hazardous condition due to the loss of grounding continuity. Also, if pieces of the tape break off, the function of the regulator could be affected. Multiple Circulating Spray Station Single Direct Spray Station 06461...

  • Page 9: Connections

    . 1 are only a guide for selecting and installing a circulating or direct system; they are not actual system designs. Contact your Graco distributor for assistance in designing a system to suit your needs. The equipment must be grounded to reduce the risk NOTE: Before you install the regulator, thoroughly flush of static sparking.

  • Page 10: Operation

    Operation Operation Pressure Relief Procedure Adjusting the System Pressure Follow the Pressure Relief Procedure whenever NOTICE you see this symbol. • The new system must be cleaned and tested thoroughly before admitting fluid to the regulator to avoid contaminants clogging or damaging the regulator.

  • Page 11: Cleaning The Regulator

    Operation Flushing Procedure 2. Adjust the pump air pressure and fluid regulator for the desired spray pattern. Use the lowest possible air and fluid pressures for your application. For optimum performance, the inbound fluid pressure should be at least 500 psi (3.4 MPa, 34 bar) above the regulated fluid pressure.

  • Page 12: Troubleshooting

    Troubleshooting Troubleshooting Follow the Pressure Relief Procedure, page 10, before checking or repairing the equipment. NOTE: check all possible solutions in the chart below before you disassemble the regulator. Problem Cause Solution No pressure regulation Damaged diaphragm Replace diaphragm. Leaking or dirty seat Replace cartridge, or clean seat.

  • Page 13: Service

    Service Service Service Kits Install the Air-Operated Conversion Kit For the Fluid Diaphragm Repair Kit, order Part 238747. Parts included in this kit are marked with an asterisk, for (See Parts Drawings on pages 14-17) example (7*), in Parts, starting on page 16. 1.
  • Page 14 Service 6. Remove the o-ring (17) from the groove in the base NOTE: The diaphragms will have a bow in them housing (4), clean and inspect the base housing, before you install them. and replace if necessary. 10. Align the holes in the diaphragms with the backing 7.

  • Page 15: Replacing The Cartridge

    Service Replacing the Cartridge See Fig. 3, and follow the steps below. For parts that 3. Inspect and clean the internal walls of the base are not called out in Fig. 3, see Parts, starting on page housing (4). NOTE: Be careful that you do not scrape or gouge the internal walls of the base housing, because they NOTICE are sealing surfaces.

  • Page 16: Parts

    Parts Parts Models 238890, 238891, 238892, and 26A086 238890 with fluid pressure gauge 238891 with EZ Flush gauge port plug 26A086 with 316 17–4 wetted parts for acid 238892 with fluid pressure gauge applications Spring-Operated Regulator Spring-Operated Regulator 3000 to 5000 psi (21 to 34 MPa, 207 to 345 bar) Regulated Fluid Outlet Pressure 500 to 3000 psi (3.4 to 21 MPa, 34 to 207 bar)
  • Page 17 Model 238890) 113626 SPRING, compression; yellow Included in Fluid Diaphragm Repair Kit 238747 (for Models 238891, 238892, and (Models 238890, 238891, and 238892) and Fluid 26A086) Diaphragm Repair Kit 17M565 (Model 26A086) DIAPHRAGM, regulator; TPE † Included in Cartridge Repair Kit 238748 (Models...

  • Page 18: Models 238894, 248090, And 255072

    Parts Models 238894, 248090, and 255072 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 31a+ 11+...
  • Page 19 Parts Models 238894, 248090, and 255072 Ref. Part Description Qty. Ref. Part Description Qty. 21† 111858 SPRING, compression ACTUATOR 160062 SPRING, stabilizing 191584 HOUSING ADAPTER 113654 GAUGE, pressure (for Models 3† 191577 NUT, spring retainer 238894 and 248090) 191578 HOUSING, base (for Model 28+...

  • Page 20: Model 244734

    Parts Model 244734 244734 with EZ Flush gauge port plug 100 psi (0.7 MPa, 7 bar) Maximum Inbound Air Pressure Air-Operated Regulator, Full Range 500 to 4000 psi (3.4 to 28 MPa, 34 to 276 bar) Regulated Fluid Outlet Pressure 11+...
  • Page 21 Parts Model 244734 Ref. Part Description Qty. Ref. Part Description Qty. 20† 109450 O-RING, packing; PTFE 016 ACTUATOR 21† 111858 SPRING, compression 191584 HOUSING ADAPTER 160062 SPRING, stabilizing 3† 191577 NUT, spring retainer 113654 GAUGE, pressure (for Models 197952 HOUSING, base 238894 and 248090) 5†...

  • Page 22: Technical Specifications

    Fluid pressure 0-3000 psi 0-5000 psi 0-5000 psi gauge (Models (0-21 MPa, (0-21 MPa, (0-21 MPa, 238890, 238892, and 0-207 bar) 0-345 bar) 0-345 bar) 238894) Maximum flow (in 65 2 gpm (7.6 lpm) 2 gpm (7.6 lpm) 2 gpm (7.6 lpm) 2 gpm (7.6 lpm)

  • Page 23: Air Requirements For Air-Operated Regulators (Models 238894, 248090, And 255072)

    Technical Specifications Air Requirements for Air-Operated Regulators (Models 238894, 248090, and 255072) The following table shows the approximate air pressure needed to regulate the air-operated regulator to a given fluid outlet pressure. Regulated Fluid Outlet Pressure Air Pressure Models 238893, 238894, and 248090 Model 255072 0.19 1000...

  • Page 24: Performance Data

    Performance Data Performance Data Fluid Pressure Regulators, Models through 238894, 248090, and 26A086 308647U...

  • Page 25: Dimensional Drawings

    Dimensional Drawings Dimensional Drawings Model 238891 with port plug Models 238890, 238892, and 26A086 with gauge (spring operated) Height: 8.9 in. (225 mm) Diameter of base housing: 2.65 in. (70 mm) Model 238890 with gauge Models 248090 and 255072 with gauge...

  • Page 26: 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.

This manual is also suitable for:

23889226a086238894238891244734248090 ... Show all

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