Ball Valve with Lockable Device 1Diameter:1/4''-4'' 2Pressure:16P.25P.40P.64P; ... :WCB.304,306,304L,306L Ball Valve with Lockable Device DescriptionMaterials WCB.304,306,304L,306LNominal Size1/4''-4'' ... Materials to oil field and refinery as Steel Pipes, Pipe Fittings, Flange, Valves, Gasket, Petroleum Machinery, Fasteners. With the ... create a bright future together Ball Valve with Lockable Device