WM Specification File
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This specification contains the requirements for anti-slam air valves for plumbing applications to enable WaterMark certification. Anti-slam air valves covered by this specification range from DN 15 to DN 250, with a maximum operating temperature of 70°C.
NOTE: AS 4956 should be read in conjunction with this specification.
Adoption Date
17 Mar 2022

Licences evaluated under this specification