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    GreyFlow™

    WCTNZ® is proud to be the official distributor of CompoCloset™ composting toilets in the Realm of New Zealand (New Zealand, the Cook Islands, Niue, Tokelau and the Ross Dependency)

    GreyFlow™ Brand Page Logo

    GreyFlow™ sets the standard in greywater diversion. Reuse shower and laundry water via compliant GreyFlow™ systems so you save water, keep gardens thriving through water restriction periods, and reduce network/onsite system load. The GreyFlow™ GWDD range is WaterMark™ certified and award-winning (2018 Australian Water Association).

     

    Cut mains water use & bills

    Keep gardens alive in restrictions

    Lower load on sewers/onsite systems

    Reliable, low-maintenance filtration & pumping

    ✓ WaterMark™ Certified

     

    Say yes to greywater—done right

     

    Notes: Greywater systems are a great way to save water. In New Zealand, the compliant method is subsurface land application (below ground)—not surface/sprinkler irrigation—so you can reuse greywater safely and within council rules.


    WCTNZ® | Waterless Composting Toilets NZ Limited | Copyright 2025 ©

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    GreyFlow™ Flush Valve Kit (X2 Valves)

    GW GF-FVx2
    The GreyFlow™ flush valve is an end-of-line flushing value add-on to your GreyFlow™ greywater irrigation system.
    $130.43 excl GST excluding shipping

    GreyFlow™ | The Complete Range of PS AG (above ground models)

    GW GFPS-AG-#
    The complete range of GreyFlow™ "Plug & Play" PS AG greywater diversion systems.
    Lowest-tier pricing $1,822.00 excl GST

    GreyFlow™ PRO | BELOW GROUND / 2 STAGE INSTALL SYSTEMS (Builders Kit)

    GW GF-PRO-A/B
    The range of 2-Stage package greywater diversion systems is suitable for the new build, where the plumber needs to prefix the tank and the finishing kit later on. The GREYFLOW™ PRO come in two options: (Manual) or (Automatic) cleaning greywater diversion systems. These are suitable where the system needs to be buried below ground for domestic & commercial sites.
    Lowest-tier pricing $978.26 excl GST

    GreyFlow™ | Feeder Pipe - Flow Restrictor

    GW GF-CV25
    Flow restrictor for use on downhill runs where the slope (gradient) exceeds 3°.
    $49.26 excl GST excluding shipping

    GreyFlow™ | Feeder Pipe - Flow Restrictor 6X Kit

    GW GF-CV25-6xKit
    Flow restrictors for use on downhill runs where the slope (gradient) exceeds 3°.
    $270.00 excl GST excluding shipping

    GreyFlow™ | EZGREY™ (SHORT) GREASE TRAP 60L

    GW EZGREY-GT60
    GreyFlow™ | EZGREY™ Grease Trap 60L is an efficient and durable solution designed to separate and trap grease and solids from greywater before it enters your wastewater system. Compact, easy to install, and simple in its design for easy maintenance, it prevents blockages and reduces maintenance while ensuring compliance with water treatment standards. With a capacity of 60 litres, it's ideal for small homes, Tiny Homes and granny flats looking for grease management.
    $501.37 excl GST excluding shipping