The usage of "Reduced Bore" valves in the pipeline construction
The usage of "Reduced Bore" valves in the pipeline construction
(OP)
Could anyone please give explanation for using the "reduced Bore" valves in the pipeline construction.
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The usage of "Reduced Bore" valves in the pipeline construction
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RE: The usage of "Reduced Bore" valves in the pipeline construction
RE: The usage of "Reduced Bore" valves in the pipeline construction
The only time that the increased torque is a problem is if an actuator is sized very close to its maximum torque and you have to go up in size for the full bore. Most of the time you have so much safety factor built into your actuator that the same device works fine for either.
The dP across a reduced bore valve cannot be seen on most field measurement equipment (the beta ratio on a 10-inch valve is 0.8, on a 16-inch valve it is 0.875).
The big downside of reduced bore valves is that it is difficult to jam a pig through them.
David
RE: The usage of "Reduced Bore" valves in the pipeline construction
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"I am sure it can be done. I've seen it on the internet." BigInch's favorite client.
http://www.youtube.com/watch?v=hpiIWMWWVco
"Being GREEN isn't easy." Kermit
http://virtualpipeline.spaces.live.com
RE: The usage of "Reduced Bore" valves in the pipeline construction
RE: The usage of "Reduced Bore" valves in the pipeline construction
As to "always use reduced bore wherever possible" I would say that with increasing regulations to run smart pigs, "whenever possible" becomes "never" (because the government is taking jurisdiction over pipelines with alarming frequency).
David
RE: The usage of "Reduced Bore" valves in the pipeline construction
"I am sure it can be done. I've seen it on the internet." BigInch's favorite client.
http://www.youtube.com/watch?v=hpiIWMWWVco
"Being GREEN isn't easy." Kermit
http://virtualpipeline.spaces.live.com
RE: The usage of "Reduced Bore" valves in the pipeline construction