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    Trelino® | Membrane Closure (2 Pack)

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    Brand: Trelino®
    SKU: TR-ACC-MC
    Membrane Closure (2 Pack) for Trelino® composting toilets. Compatible with the Trelino® Evo S, M & L systems.
    Availability: In stock
    $49.33 excl GST
    excluding shipping
    Estimated delivery time: Approx. 1 week (NZ-wide)
    i h
    Products
    Trelino® replacement component

    Trelino® | Membrane Closure (2 Pack)

    Two replacement silicone membrane closures for compatible Trelino® Evo urine-separation systems.

    The membrane closure sits within the urine-separation outlet and helps prevent liquid from spilling back through the separator while still allowing urine to pass into the liquids chamber during use.

    Pack quantity
    2 membrane closures.
    Material
    Silicone.
    Approx. size
    Approximately 40mm.
    Compatibility
    Trelino® Evo S, Evo M and Evo L.
    Typical service life
    Approximately 2–3 months with continuous use, depending on use intensity and condition.
    Normal design: the lip of the membrane is intentionally left slightly open. This helps prevent urine from sticking at the membrane while the closure still performs its liquid-retention function.
    Inspect the membrane during normal cleaning and replace it when it becomes hardened, damaged, distorted or no longer operates correctly.
    WCTNZ® is the exclusive authorised New Zealand distributor of Trelino® composting toilets and accessories.

    Copyright © 2026 Waterless Composting Toilets NZ Limited (WCTNZ®). All rights reserved.

    Last reviewed: 1 September 2026

    Product tags
    Signature Composting Systems
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    CompoCloset™ | Cuddy Lite

    CC-CL
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    $1,695.65 excl GST
    CompoCloset™ Cuddy

    CompoCloset™ | Cuddy

    CC-C
    The Cuddy is a compact urine-diverting composting toilet with a reliable agitator and long-term containment—ideal for RVs, campervans, camping, off-grid.
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    Nature Loo Alectura Comfort package

    Nature Loo™ | Alectura Comfort

    NL-ALT-COMFORT
    The Nature Loo™ Alectura Comfort system is a specialized design for tiny homes with a low underfloor clearance requirement of 500 mm, making it very suitable for transportable housing and most retro installations. This composting toilet model is suitable for a couple looking to install a composting toilet in their tiny house.
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    Nature Loo Alectura Premium package

    Nature Loo™ | Alectura Premium

    NL-ALT-PREMIUM
    The Nature Loo™ Alectura Premium system is a specialized design for tiny homes with a low underfloor clearance requirement of 500 mm, making it very suitable for transportable housing and most retro installations. This composting toilet model is suitable for a couple looking to install a composting toilet in their tiny house.
    $4,151.34 excl GST
    Signature Greywater Systems
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    GW EZGREY-M1
    Compact 100W pumped GreyFlow™ greywater diversion unit for low-flow shower, basin and laundry greywater, suited to small households and low-head land-application areas.
    $1,280.57 excl GST
    M-43E

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    GW-GT-M43E
    Mid-sized 64L Passway™ gravity grease separator with 16L grease capacity, accessible servicing, multiple connection configurations and independent BS EN 1825-1 test evidence.
    $927.65 excl GST
    M-43F

    Passway™ | M-43F

    GW-GT-M43F
    Compact 40L Passway™ gravity grease separator for smaller kitchens and light food-preparation areas, with 9L grease capacity and multiple connection configurations.
    $788.48 excl GST
    GREYFLOW-PS-AG-Automatic-Range

    GreyFlow™ | PS-AG-S4 (Automatic 400W) - 100mm Inlet

    GW GFPS-AG-S4
    Automatic 400W GreyFlow™ PS-AG diversion unit with backflushing filtration, suited to higher-flow greywater and more difficult land-application layouts.
    $3,268.12 excl GST

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    Copyright © 2026 WCTNZ® | Waterless Composting Toilets NZ. All rights reserved.
    All prices are entered excluding tax. Excluding shipping