GENERALLY WHAT TYPE OF ISOLATION VA
GENERALLY WHAT TYPE OF ISOLATION VA
(OP)
GENERALLY WHAT TYPE OF ISOLATION VALVE USE FOR H202 SERVICE? IN MY PLANT I HAVE SEEN ONLY BALL VLAVES ARE USED FOR ISOLATION PURPOSE,
WHY CAN'T WE USE GATE VALVE FOR ISOLATION? IS THERE ANY PARTICULAR REASON? IF SO EXPLAIN BRIEFLY....THANKS IN ADVANCE
WHY CAN'T WE USE GATE VALVE FOR ISOLATION? IS THERE ANY PARTICULAR REASON? IF SO EXPLAIN BRIEFLY....THANKS IN ADVANCE





RE: GENERALLY WHAT TYPE OF ISOLATION VA
2) No reason I am aware of other than cost, weight and size. Any materials or seals can be used in either case as required by the process fluid.
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RE: GENERALLY WHAT TYPE OF ISOLATION VA
Review the link:
http://www.eng-tips.com/viewthread.cfm?qid=407921
RE: GENERALLY WHAT TYPE OF ISOLATION VA
Before elastomers developed to make ball valves viable, gate valves were the first choice for most any service. They are still used extensively in steam because people are slow to adopt high-temperature elastomers (and they are still expensive). Since you see mostly ball valves in your facility, I'd guess that that technology is probably best for your service.
David Simpson, PE
MuleShoe Engineering
In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual. Galileo Galilei, Italian Physicist