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  1. Plumbers Technical Note – Pressure Control Valves

    This publication is for:  Plumber Documents:  Plumbers technical note- pressure control valves This technical note has been issued to provide technical information about pressure control valves in water services. The majority of these valves are used wher ...

  2. Plumbers Technical Note – Air admittance valves (AAV)

    This publication is for:  Plumber Documents:  Plumbers Technical Note – Air admittance valves (AAV) This technical note has been developed as a guide to the Western Australian plumbing industry for the correct use and installation of air admittance valves ...