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5
Installation prerequisites
Topics covered in this chapter:
•
Pre-start checks
•
Torque information
•
Torque values (flanges)
•
Torque pattern sequences
•
Tools required for control valve installation
•
Typical installation
•
Nitrogen system
•
Gas plenum tank installation and sizing
•
Nitrogen system panel
5.1
Pre-start checks
Ensure that the pipeline is completely free of all foreign material before installing the valve.
The design of the control valve has not been assessed for the effects of traffic, wind or
earthquake loading. Provide fire prevention measures and equipment per local
regulations.
5.2
Torque information
NOTICE
When installing the control valve, ensure that the bolts conform to the requirements of ASME
B16.5 paragraph 5.3 and to the material requirements of ASME B16.5 Table 1B. Gaskets must
conform to the requirements of ASME B16.20.
Tightening procedure:
1.
Lubricate the nuts and bolts.
2.
Hand-tighten until the nuts and bolts are snug against the flanges.
3.
Use the minimum pressure setting on an air wrench.
4.
Use the correct tightening sequence for the bolt flanges.
5.
Follow your company's internal flange installation procedures.
Important
Ensure that piping or other attachments connected to the control valve are not under stress.
User manual
USER MANUAL
Installation prerequisites
65
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