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Questions about Double block and bleed valve and float needle valve

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tobebest

tobebest

Chemical
Joined
Dec 30, 2013
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14
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CN
1.for DBB valve, any difference between reduced bore one and full bore one?
2.is there float needle valve? its construction?
i need your advices,thank you in advance.
 
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1) No, only size of the bore and cost
2) Not AFAIK, but may depend on size.

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