Unison Valves Pvt Ltd offers One Piece Design Screwed Ball Valve. Unison Valves Pvt Ltd is an ISO 9001:2000 certified company. One Piece Design Screwed Ball Valve has IS 9890-1981 as the design standard. One Piece Design Screwed Ball Valve has the pressure testing at BS 6755 Part I/API 598/IS 6157-1981. The screwed dimensions are ANSI B 1.20.1/BS 21/IS 554. A valve belonging to class ASA 150 with shell as the test can stand 400 PSI and 31 BAR pressure in a hydrostatic medium. In the same medium, where the test is seat and the class is ASA 150, it can stand about 300 PSI and 21 BAR pressure.
