3 piece ball valve,floating type,worm gear operated,flanged ends,made ... , ASME B16.47A/MSS SP-44 for NPS>24.Butt-welding end dimensions: ANSI/ASME B16.25.Inspection & test standard: API598 ... / worm gear/electric/pneumatic,etc.Fire-resistant & anti-static design. 3 piece float ball valve(ball valve,oil pipeline valve,oil field ...