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ASME approved soft seat safety relief valves. (UV & NB Symbols) Rugged design that's built to last and a silicone seal for optimum performance! SCFM Range 17-118. To determine the size of the end that fits into the tank, measure the OD of the threads, then subtract 1/4" because pipe sizes always measure 1/4" over the actual size. Buying more than one? Click here for our wholesale division and save!
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