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"S" stamp valve

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ijzer

ijzer

Materials
Joined
Oct 25, 2002
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313
Location
NL
A valve according B16.34 is located in a B31.1 BEP, the valve contains a weld ,does it need to be supplied with a S stamp?
Same question for a Desuperheater containing a weld, does it need to supplied with a S stamp?
 
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