scope:

This Standard applies to manual lever operated, gas shut-off valves of metallic construction, with weld and flanged and threaded ends other than pressure lubricated designs.

This Standard applies to valves used in:

a. appliances and equipment where gas is to be used for fuel purposes and,

b. piping and tubing systems falling within the pressure limitations covered in this Standard.

This Standard sets forth the minimum capabilities which a valve must possess in order to be considered suitable for use with natural gas, manufactured gas and liquefied petroleum gases (distributed as vapour with or without the admixture of air), or mixtures thereof.

Note: Valves covered by this Standard may be used on "digester gosll (methane produced during sewage treatment) but because of entrained contaminants their use shall be subject to agreement between the manufacturer and the purchaser.

Valves covered by this Standard may not be used on IIsour gosll (gas with entrained hydrogen sulphide) without modification i.e. additional requirements. Manufacturers should be consulted for their recommendation and agreement reached between the manufacturer and purchaser.