Plumbers technical note – Venting in trade waste applications

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All documents issued prior to 1 July 2017 were issued by the former Department of Commerce. Documents listed here are the latest versions available. For more information on this document, please contact

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This technical note has been produced to provide information on the connection of vents in plumbing installations that contain trade waste apparatus. It is to be read in conjunction with the information about water services provider conditions of connection in the miscellaneous technical note published in July 2014. 

Building Commission
Technical standards
Last updated 24 Oct 2016

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