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1) 6" diameter internally threaded coupling for internal tank's emergency relief vent (Morrisson 6" emer. Vent 246000 cfh) 2) 2" diameter externally threaded nipple for internal tank's normal vent (Morr. 354 updraft vent) 3) 2" Male THR. Fill (w/ overfill prevention valve and fill tubing) 4) 2" diameter internally threaded coupling for liquid level gauge (Clock Gauge per nfpa30)
UL 142 Listed
3/16" Mild Steel Construction
3/16" Flanged only Heads
Various sizes available
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