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Edited by premjagan, 01 September 2012 - 03:24 PM.
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Boiler Drum Steam Header
Started by premjagan, Sep 01 2012 03:23 PM
2 replies to this topic
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#1
premjagan
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Veteran Member
Posted 01 September 2012 - 03:23 PM
why boiler drum steam header exit line having mostly ON/OFF valve or motor operating valve rather than control valve? any specific reason is there?
#2
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Posted 12 October 2012 - 03:01 PM
Yes,
At least in the US, code requires that boilers have block valves for steam isolation purposes. Control valves are notorious for leaking by, especially with superheated steam..
At least in the US, code requires that boilers have block valves for steam isolation purposes. Control valves are notorious for leaking by, especially with superheated steam..
#3
tarafdar
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Posted 13 October 2012 - 05:03 AM
Hi,
Go through ASME Boiler & Pressure Vessel Code Section 1
B31.1-122.1.7(A),(A1),(A1A)
Thanks
Go through ASME Boiler & Pressure Vessel Code Section 1
B31.1-122.1.7(A),(A1),(A1A)
Thanks
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