IS 779 : 1994 Water Meters (Domestic Type) - Specification

UDC 68.1121                                                   CED3

Reaffirmed 2020

1 Scope

This standard covers terminology, construction, technical characteristics, metrological characteristics and other requirements of water meters with threaded end connections of size up to and including 50 mm, having nominal flow rates in the range of 1.5 to 15 kl/h, suitable for measuring the flow of cold potable water at a nominal pressure of 1 MPa (Max) and ambient temperature.

This standard is applicable both for semipositive (piston type) and inferential (turbine type) including magnetic type water meters having dry or wet dial.

2 References

IS 292 : 1983 Leaded brass Ingots and castings

IS 318 : 1981 Leaded tin bronze ingots and castings

IS 319 : 1989 Free cutting brass bars, rods and sections

IS 320 : 1980 High tensile brass rods and sections (other than forgings stock)

IS 410 : 1977 Cold rolled brass sheet, strip and foil

IS 531 : 1981 Leaded brass strip for instrument parts

IS 1264 : 1989 Brass gravity die castings (ingots and castings)

IS 2267 : 1972 Polystyrene moulding materials

IS 2643 Dimensions for pipe fastening purposes:

Part 1 : 1975 Tolerances

Part 2 : 1975 Basic profiles and

Part 3 : 1975 Limits of sizes

IS 4131 : 1967 Nickel copper alloy castings

IS 4905 : 1968 Methods for random sampling

IS 6603 : 1972 Stainless steel bars and flats

IS 6784 : 1984 Methods for performance testing of water meters

IS 6911 : 1992 Stainless steel plate, sheet and strip

IS 7328 : 1992 High density polyethylene materials for moulding and extrusion

Footnote

1 1 MPa = N/mm² = 9.8kgf/cm²