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    SKU: Uni-ADK
    The Arch Drain Kit suits most situations where a trench soak-away is required. Compatible with all Nature Loo™ systems, all Clivus Multrum™ systems, Sun-Mar™ Compact, Sun-Mar™ Excels and Sun-Mar™ Centrex systems.

    Choose the Product options below

    Note: If you are using the drain kit for a Sun-Mar™ Centrex Micro-Flush system, you will need a larger drain to deal with the volume of liquid.

    Add one extension for the Sun-Mar™ Centrex 2000 Micro-Flush 240 or NE
    Add two extensions for the Sun-Mar™ Centrex 3000 Micro-Flush 240 or NE

    $104.35 excl GST
    excluding shipping
    i h

    WCTNZ® - Standard Arch Drain Kit

    For all Nature Loo™, all Clivus Multrum™, and  Sun-Mar™ Compact, Sun-Mar™ Excels and Sun-Mar™ Centrex systems.

    For EcoLet™ Separera Urine Diversion systems, please see the Soak Pit Kit 400.

    The WCTNZ® Standard Arch Drainage Kit includes

    • 1 x Drain arch 1200mm with
    • 2 x Drain arch end caps
    • 1 x Geotextile
    • 1 x 700mm long 50mm PVC DWV Feeder Pipe
    • 1 x 50mm Threaded Fitting
    • 2 x 45 degree 50mm elbows (bends)

    Excess Liquid Drain Options

    The drainage system to be chosen depends entirely on the soil condition, groundwater level, and local regulation.

    Two drainage options are recommended as below:

    Absorption Trench
    This is the normal method for disposal of excess liquid but refer to the council for a permit for any specific requirements.


    Holding Tank
    This is suited for use in mobile homes or campers.

    1. Dig a trench in a position located in front of the liquid end product drain.
    2. The trench is to be located in the soil of good permeability and in a position where groundwater will not flood the unit.
    3. If there is some doubt as to the permeability of the soil, extra trenching length may be required especially if a hand basin or other fittings will also drain to the same trench.
    4. The liquid leaving the compost unit when in use is not expected to exceed 1 litre per day per resident.
    5. In some locations it may be desirable or necessary to connect the excess liquid drain to a greywater system or an alternative disposal method complying with AS/NZS 1547:2012.

    Note; Trench dimensions and construction are to be in accordance with AS/NZS 1547:2012

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