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butterfly valves

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billybob150811

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got a test and purge tomorrow so have to read up tonight on butterfly valves not sure if there allowed or not anybody know the answer off the top of there head its a bula gasket forming the seal on the flanges
 
tomorrow I can find the guy who ordered it find some sort of delivery info and find the manu I can also find six numbers and marry shakira which is more likely and doesn't involve some stupid git saying I got from bss I think the strand of thought I have concerns seals on gas valves used as ecv,s
 
Short of actually removing and inspecting it just do a let by downstream of it.
 
If it has epdm seals you cannot use it on gas
 
TA valves will have a sticker with Nitril if its for gas.
 
had to look in igem up2 and the boss catalogue it is a nitrile seal but this doesn't have lugs which are required for butterfly valves metal to metal seals arnt allowed either
 
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