Emerson ANDERSON GREENWOOD 4142HF Installation, Operation And Maintenance Instructions

Pressure relief valve

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ANDERSON GREENWOOD 4142HF PRESSURE RELIEF VALVE
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
Before installation, these instructions must be carefully read and understood.

TABLE OF CONTENTS

1. Safety Precautions ........................................ 2
2. General Descriptions .................................... 2
3. Operation ....................................................... 2
4. Set Pressure Verification .............................. 3
5. Installation ..................................................... 3
6. Maintenance .................................................. 4
7. Testing Set Pressure .................................... 7
8. Pallet Identification ....................................... 7
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Tables and Figures
Table 1
Seat Lap Band Width ....................... 6
Pallet Thickness .............................. 7
Pallet Pressure Ranges .................. 7
Pressure Settings ............................ 9
Table 5
Replacement Parts ....................... 10
Figure 1
Valve General Assembly ................. 5
Figure 2
Pallet Construction ......................... 8
© 2021 Emerson. All rights reserved.
VCIOM-16471-EN 21/05

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Summary of Contents for Emerson ANDERSON GREENWOOD 4142HF

  • Page 1: Table Of Contents

    ANDERSON GREENWOOD 4142HF PRESSURE RELIEF VALVE INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS Before installation, these instructions must be carefully read and understood. TABLE OF CONTENTS Tables and Figures 1. Safety Precautions ........2 2. General Descriptions ........2 Table 1 Seat Lap Band Width ....... 6 3.
  • Page 2: Safety Precautions

    3 OPERATION Read and understand this instruction manual The Anderson Greenwood 4142HF PRV is The Anderson Greenwood 4142HF PRV is a before installing, operating or performing employed in gas/vapour service applications direct acting vent valve based on the weight of...
  • Page 3: Set Pressure Verification

    ANDERSON GREENWOOD 4142HF PRESSURE RELIEF VALVE INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS 4 SET PRESSURE VERIFICATION 4.2 Set Pressure Adjustment (See Figure 1) 5 INSTALLATION The valve has been factory set to the required If the pressure setting is to be verified prior to...
  • Page 4: Table

    ANDERSON GREENWOOD 4142HF PRESSURE RELIEF VALVE INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS 6 MAINTENANCE 6.2 Pallet Assemblies (For reference numbers, see Figure 2) Regular inspection should be carried out to ensure that the pressure port is free from 1. VLP/LP Pallet assembly 2”, 3”, 4”...
  • Page 5: Valve General Assembly

    ANDERSON GREENWOOD 4142HF PRESSURE RELIEF VALVE INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS PARTS LIST FIGURE 1 Item No. Description Valve General Assembly Upper Body Cover Seat Assembly Seat Vacuum Post O-ring Shroud Capscrew Washer Body Gasket Hex Set Screw O-ring Inlet Flange...
  • Page 6: Seat Lap Band Width

    ANDERSON GREENWOOD 4142HF PRESSURE RELIEF VALVE INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS 6.3 Valve Refurbishment TABLE 1 - SEAT LAP BANDWIDTHS With valve in component parts thoroughly clean Valve Size, Nominal Width Max Width all surfaces with a suitable solvent and check In.
  • Page 7: Testing Set Pressure

    ANDERSON GREENWOOD 4142HF PRESSURE RELIEF VALVE INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS 7 TESTING SET PRESSURE The pressure setting should be checked and if necessary adjusted as described in section 4. VLP / LP PALLET 2", 3" AND 4" HP PALLET 2", 3", 4" AND 6"...
  • Page 8: Pallet Construction

    ANDERSON GREENWOOD 4142HF PRESSURE RELIEF VALVE INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS FIGURE 2 Pallet Construction VERY LOW PRESSURE (VLP) AND LOW PRESSURE (LP) 2", 3", 4" VERY LOW PRESSURE (VLP) AND LOW PRESSURE (LP) 6", 8", 10", 12" Pallet [1]...
  • Page 9: Equivalent Weights For Pressure Settings

    ANDERSON GREENWOOD 4142HF PRESSURE RELIEF VALVE INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS TABLE 4 - EQUIVALENT WEIGHTS FOR PRESSURE SETTINGS Inlet Size 2" 3" 4" 6" 8" 10" 12" Mean Sealing Area (in 4.53 9.971 17.603 39.662 69.829 109.563 156.894 Setting (mbar) 12.3...
  • Page 10: Replacement Parts

    VCIOM-16471-EN © 2021 Emerson Electric Co. All rights reserved 05/21. Anderson Greenwood is a mark owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co. The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their prospective owners.

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