Ali Huseyn
Mechanical
Hi, I would like to ask about "Root" valve does anyone know about this term who engaging in this side?
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Root Valve
- Thread starter Ali Huseyn
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In instrumentation, a root valve is a valve that isolates pressure, a.k.a. impulse, tubing where it taps off of the process piping before the tubing goes to an instrument. The root valve is typically specified by the process or piping engineers, and its output forms the boundary between the areas of responsibility of the process/piping and instrumentation engineers.
It may mean other things to other people.
xnuke
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It may mean other things to other people.
xnuke
"Live and act within the limit of your knowledge and keep expanding it to the limit of your life." Ayn Rand, Atlas Shrugged.
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.
- Thread starter
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LittleInch
Petroleum
No, because it's not outputting anything.
"Primary isolation valve" or just "isolation valve" will do, but root valve is easier to say.
In theory you don't really need one as instruments often install a double block valve in a single block immediately after the piping valve.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
"Primary isolation valve" or just "isolation valve" will do, but root valve is easier to say.
In theory you don't really need one as instruments often install a double block valve in a single block immediately after the piping valve.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
Ali Huseyn,
The term "Root Valve" relates to a specific "Function" not a Valve Type.
Any shut-off type valve (Gate, Globe, Ball, Plug, Pinch, etc) can function as a "Root Valve" as long as it is in compliance with the specific line class specification.
Check Valves cannot function as a "Root Valve".
As RVAmeche suggested, go here:
Sometimes its possible to do all the right things and still get bad results
The term "Root Valve" relates to a specific "Function" not a Valve Type.
Any shut-off type valve (Gate, Globe, Ball, Plug, Pinch, etc) can function as a "Root Valve" as long as it is in compliance with the specific line class specification.
Check Valves cannot function as a "Root Valve".
As RVAmeche suggested, go here:
Sometimes its possible to do all the right things and still get bad results
As mentioned, root valve has very little technical meaning. A "Root" valve is the first valve off a process line that provides the first isolation. It provides the branch connections to hook up other instrument/etc... It simply is the first valve to provide isolation from a live system, typically for instrumentation purposes.
Thanks,
Ehzin
Thanks,
Ehzin
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