GLOBE VALVES OS & Y - FORGED - ISO 15761/API 602/B16.34
Australian Pipeline Valve - Installation, Operation and Maintenance Manual
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1.2 PREPARATION FOR INSTALLATION
• Remove protective end caps or plugs and inspect valve ends for damage to threads, socket weld
bores or flange faces.
• Thoroughly clean adjacent piping system to remove any foreign material that could cause damage
to seating surfaces during valve operation.
• Verify that the space available for installation is adequate to allow the valve to be installed and to
be operated.
Note
Ensure sufficient clearance for the stem in the full open position may cause the
valve to be inoperable. Inadequate clearance for valve may add mechanical loading
to the valve ends. Sufficient clearance should be allowed for threaded valves to be
‘swung’ during installation.
1.3 END CONNECTIONS
1.3.1 Threaded Ends
Check condition of threads on mating pipe.
Apply joint compound to the male end of joint only. This will prevent compound from entering the valve
flow path. Wrenches should be used on the valve end closest to the joint being tightened.
1.3.2 Flanged Ends
Check to see that companion flanges are dimensionally compatible with the flanges on the valve body
and make sure sealing surfaces are free of dirt.
Install the proper studs and nuts for the application and place the flange gasket between the flange
facings.
Stud nuts should be tightened in an opposing criss-cross pattern in equal increments
to ensure even gasket compression. Refer Appendix A, Figure 10.
1.3.3 Socket weld Ends
Remove all, debris grease, oil, paint, etc., from the pipe that is to be welded into the valve and from the
valve end connections.
Insert the pipe into the valve end connection until it bottoms out in the socket weld bore. Withdraw the
pipe 1.59mm (1/16”) so that a gap remains between the pipe and the bottom of the socket weld bore to
prevent cracks (ASME B1.11). Tack the pipe into the valve and complete the fillet weld.
