IS 778 : 1984 Specification for Copper Alloy Gate, Globe and Check Valves for Waterworks Purposes

UDC 621.646.28 + 621.646.5 [669.35] : 628.146.2              CED3

Reaffirmed 2020

1 Scope

1.1 This standard covers requirements of copper alloy gate, globe and check valves of nominal sizes 8 to 100 mm suitable for working temperatures up to 45°C and non-shock working pressure Up to 1.6 MPa, for waterworks purposes.

2 References

IS 2 : 1960 Rules for rounding off numerical values

IS 210 : 1978 Specification for grey iron castings

IS 318 : 1981 Specification for leaded tin bronze, ingots and castings

IS 319 : 1974 Specification for free-cutting brass bars, rods and sections

IS 320 : 1980 Specification for high tensile brass rods and sections

IS 534 : 1975 Dimensions for pipe threads where pressure tight joints are required on the threads

IS 554 : 1975 Dimensions for pipe threads where pressure tight joints are required on threads

IS 1264 : 1981 Specification for brass ingots for gravity die castings and brass gravity die castings (including naval brass)

IS 1367 : 1967 Specification for technical supply conditions for threaded fasteners

IS 2712 : 1971 Specification for compressed asbestos fibre jointing

IS 3488 : 1980 Specification for brass bars, rods and sections suitable for forging

IS 4218 : Part 3 : 1967 ISO metric screw threads: Part 3 Basic dimensions for design profiles

IS 4218 : Part 4 : 1967 ISO metric screw threads: Part 4 Tolerancing system

IS 4398 : 1972 Specification for carbon-chromium steel for the manufacture of balls, rollers and bearing races

IS 4687 : 1980 Specification for gland packing asbestos

IS 4694 : 1968 Specification for basic dimensions for square threads

IS 5192 : 1975 Specification for vulcanized natural rubber based compounds

IS 5414 : 1969 Specification for g]and packing, jute and hemp

IS 6912 : 1973 Specification for copper alloy and forgings

IS 7008 : Part 3 : 1973 ISO metric trapezoidal screw threads: Part 3 Basic dimensions for design profiles

IS 7008 : Part 4 : 1973 ISO metric trapezoidal screw threads: Part 4 Tolerancing system

IS 7608 : 1975 Specification for phospher bronze wires (for general engineering Purposes)