GIS/V7-2:2020 Specification for distribution valves, Part 2: Plastics bodied valves of sizes up to and including 180 mm suitable for operation at pressures not exceeding 5.5 bar
GIS/V7-2:2020 Specification for distribution valves, Part 2: Plastics bodied valves of sizes up to and including 180 mm suitable for operation at pressures not exceeding 5.5 bar