AS/NZS 4158:1996

Specifies requirements for factory-applied thermal-bonded polymeric corrosion protective coatings (barrier coatings) on valves and fittings as used in the water industry.

This Standard specifies the requirements for factory-applied thermal-bonded polymeric corrosion protective coatings (barrier coatings). For the purposes of this Standard, the term polymeric coating is intended to encompass both thermoplastic and thermosetting coating materials which are used to coat both the internal and external surfaces of valves and fittings.This Standard covers the following service application areas:(a) Factory-applied coatings and associated coatings used for repair.(b) Ductile iron, grey cast iron, malleable iron, steel and copper alloy based substrates.(c) Valves, fittings and their components and associated equipment. (d) Contact with potable water and waste water up to 60 C.(e) Above and below ground exposure.NOTE: Typically these coatings include some fusion bonded epoxies and polyamide. This does not preclude the use of other polymeric materials provided they meet the requirements of this Standard.

First published as AS/NZS 4158.1:1994.
Jointly revised and redesignated AS/NZS 4158:1996.