... :http://www.ehhydraulics.com, EHVCSS SERIES 2-WAY HIGH PRESSURE CNG BALL VALVE (CARBON STEEL, STAINLESS STEEL ... ·Tube Port: 10,12 to 16mm OD (3/8,1/2 TO 3/4 in. OD)·Pipe Thread: 3/8", 1 ... /2", 3/4", 1" BSPP (NPT)·On request O-Rings: Viton, ...