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Bleed valve

PostPosted: Wed Feb 13, 2013 1:09 pm
by j.sorin
Whr and why bleed valve is used in instruments?

Re: Bleed valve

PostPosted: Thu Feb 14, 2013 6:51 am
by lukejones
If the conveyed fluid is hazardous or under high pressure, a branch
fitted with a bleed valve is inserted between the guage and its isolating
valve, to relieve pressure and /or drain the liquid before servicing the
gage. They are connected to the drain system.

The above mentioned is the primary use of the bleed valve, the other uses
of bleed valve in case of instruments is: it can be used for taking sample and
for adding a comparison gage to the line.

Hope this helps..