WMTS:535-2021 | Public Comment Draft Round 1

Closed 2 Dec 2021

Opened 8 Oct 2021

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For Public Comment

Technical Specification for the WaterMark Certification Scheme

This specification includes requirements for air valves for plumbing applications. The air valves covered by this specification are limited to anti-slam valves within the scope of AS 4956. Additionally, air valves for plumbing applications are limited to the requirements of this specification. This specification is applicable to anti-slam air valves from DN 15 to DN 250, with a maximum operating temperature of 70°C.

The intended application of air valves is within hot, cold and heated recirculatory building plumbing pipe systems. The primary function of the valve is to keep entrapped air out of the building pipework network, to maximise flows and minimise water hammer within the pipework

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Why your views matter

The ABCB is undertaking consultation to ensure stakeholders are informed of the development of all proposed new, or amended Technical Specifications. In undertaking this consultation stakeholders have an opportunity to provide input and/or comment during a Technical Specification's development.


  • Building and plumbing products
  • WaterMark


  • Technical specifications