worm gear float ball valve,flanged ends.made of cast steel. Design & manufacture standard: API6D, API608, ANSI/ASME B16.34, ... ,BS5351. Face to face dimensions: ANSI/ASME B16.10, API6D.Flange connection: ANSI/ASME B16.5 for NPS24, ASME B16.47A ... . worm gear float ball valve(ball valve,gear ball valve,cast steel ball valve)