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Always follow standard safety procedures when working on a valve.
Globe valves should usually be installed with the inlet below the
valve seat. For severe throttling service, the valve may be installed
so that the flow enters over the top of the seat and goes down through
it. Note that in this arrangement, the packings will be constantly
pressurized. If the valve is to be installed in near throttling service,
verify with Velan Engineering. Globe valves per se are not suitable
for throttling service.
The valve should be welded onto the line with the disc in the fully
closed position. Leaving it even partially open can cause distortion
and leaking. Allow time for the weld to cool before operating the
valve the first time in the pipeline.
The preferred orientation of a globe valve is upright. The valve may
be installed in other orientations, but any deviation from vertical
is a compromise. Installation upside down is not recommended because
it can cause dirt to accumulate in the bonnet.
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