Globe Valve For Isolation
Globe Valve For Isolation
(OP)
So the question is, does a globe valve have the same sealing properties as a gate valve as an isolation. If not are there any gate valves with the same flange to flange dimensions as a full swing check? Thanks for the help.





RE: Globe Valve For Isolation
Preliminary (unqualified)answers:
Sentence one: yes (under certain circumstances/conditions)
Sentence two (if no to sentence one): yes (under certain circumstances/conditions)
Full information is necessary if you wish a more detailed answer.Please specify all details (size, pressure class, media, working pressure etc, etc, etc..)
RE: Globe Valve For Isolation
I don't use an on/off valve (gate, ball, or butterfly) for throttling and I don't use a throttle valve (globe, v-ball, or choke) for on/off service.
As to fitting in the hole of a swing check, look up flange to flange dimensions in API 6D.
David
RE: Globe Valve For Isolation
RE: Globe Valve For Isolation
To improve positive seating, the valve can be installed in reversed orientation to provide a force down onto the plug instead of trying to push it off the seat.
You would of course lose a great deal of flow capacity through a globe valve compared to a gate....and they usually cost more.
Zdas04 is assuming that you are referring to ANSI standard valves, whatever class of valves you have, there should be commonality between the face to face dimensions...but it would pay to check.
RE: Globe Valve For Isolation