Unison Valves Pvt Ltd manufactures Pneumatically Actuated Ball Valve. Unison Valves Pvt Ltd is an ISO 9001:2000 certified company. Pneumatically Actuated Ball Valve has IS 9890-1981 design standard. The pressure testing stands at BS 6755 Part I/API 598/IS 6157-1981. ANSI B 16.5 is the flange dimension. When face to face, the valve measures ANSI B 16.10/IS 9884-1981. The screwed dimension was ANSI B 1.20.1/BS 21/IS 554. The socket weld dimensions are ANSI B 16.11/BS 5351/ IS 4712. Butt Weld Dimension is ANSI B 16.25/BS 5351/ IS 11790.
