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NB 250 isolation valve on suction line

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mechanicaldup

Mechanical
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Jun 30, 2005
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what is the more economic type of isolation valve to be used on a NB250mm steel line?


I supose a gate valve will be more suitable on a pump suction line?
 
You can use either a gate valve or a butterfly valve. A butterfly valve gives you better isolation but it may be redundant in suction line. Further, in open condition, a gate valve gives you the lowest(almost negligible) pressure drop.

 
what would be the more economic solution quark?
 
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