WMTS:529 - Integral re-circulation loop kits for use in heated water systems

Closed 31 Jan 2020

Opened 15 Nov 2019


For Public Comment

Technical Specification for the WaterMark Certification Scheme

This proposed new Technical Specification, WMTS-529 Integral re-circulation loop kits for use in heated water systems, specifies the requirements for copper piping systems with an integral re-circulating loop, for use in heated water systems.  The systems have a size range from DN 25 to DN 40, a maximum operating temperature of 70ºC and a maximum operating pressure of 1000 kPa.

The copper pipe re-circulatory system provides heated water to outlets within buildings, through an integrated re-circulation system, which compromises a return line installed internally within the delivery piping.

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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