Emerson ANDERSON GREENWOOD 4020HP Installation, Operation And Maintenance Instructions

ANDERSON GREENWOOD 4020HP PRESSURE AND VACUUM RELIEF VALVE
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
Before installation, these instructions must be read carefully and understood.

TABLE OF CONTENTS

1. Safety Precautions ........................................ 2
2. General Descriptions .................................... 2
3. Operation ....................................................... 2
4. Set Pressure/Vacuum Verification ............... 3
5. Installation ..................................................... 5
6. Maintenance .................................................. 5
7. Valve Disassembly ......................................... 5
8. Valve Refurbishment ..................................... 9
9. Valve Reassembly ......................................... 9
10. Testing Set Pressure and Vacuum ............. 10
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Tables and Figures
Table 1 Inlet Flange Thread Forms ............. 5
Table 2 Vacuum Pallet Ranges, inch ........... 8
Table 3 Vacuum Pallet Ranges, mm ........... 8
Table 4 Seat Lap Band Width ....................... 9
Table 5 Pallet Thickness ............................ 10
Table 6 Pallet Lengths ............................... 10
Table 7 Equivalent Weights for
Vacuum Setting ............................. 11
Table 8 Replacement Parts ....................... 13
Figure 1 Valve General Assembly ................. 4
Figure 2 Pressure Pallet Assembly .............. 6
Figure 3 Vacuum Pallet Assembly
VLP/LP 2" (50 mm), 3" (75)
and 4" (100 mm) .............................. 7
Figure 4 Vacuum Pallet Assembly
VLP/LP 6" to 12"
(150 mm to 300 mm ) ...................... 7
Figure 5 Vacuum Pallet Assembly HP .......... 8
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VCIOM-16425-EN 21/05