worm gear float ball valve,flanged ends.made of cast steel. Design & manufacture standard: API6D, API608, ANSI/ASME B16.34, ... /2~ 24 or DN15~DN600.Major materials: WCB, WC1, WC6, WC9, A105, LCC, LCB, CF8(304), CF8M(316), CF3(304L), CF3M ... . worm gear float ball valve(ball valve,gear ball valve,cast steel ball valve)