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    IX Defend Refill Cartridge

    IX Defend Refill Cartridge

    IXDEFENDREFILL-M

    In stock

    £190.80 Inc. VAT £159.00 Ex. VAT
    £190.80 Inc. VAT £159.00 Ex. VAT
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    Replacement cartridge for the IX Defend filter system, carrying the same 5-stage scale, gypsum and corrosion protection media (prefiltration, activated carbon, targeted hardness reduction, media-specific treatment, fine filtration) as the original unit. Twist-lock fit into your existing IX Variable Head via the 3/8" push-fit connection.

    Technical Specifications

    Spec Medium Large
    Rated capacity (180ppm hardness, bypass 0) 2,000 litres 3,644 litres
    Fits IX Defend Filter System / IX Variable Head IX Defend Filter System / IX Variable Head
    Media 5-stage: prefiltration, activated carbon, targeted hardness reduction, media-specific treatment, fine filtration 5-stage: prefiltration, activated carbon, targeted hardness reduction, media-specific treatment, fine filtration
    Connection 3/8" push-fit, quick-change twist-lock 3/8" push-fit, quick-change twist-lock
    Flow rate 4 litres per minute 4 litres per minute

    Who it's for

    Sites with tough water conditions needing a straight swap-in replacement cartridge for their existing IX Defend system.

    Why buy this from WrekinWater

    Held in stock in both sizes for sites that can't afford a gap in protection against tough water conditions.

    IX Defend Refill Cartridge

    £190.80 Inc. VAT £159.00 Ex. VAT
    £190.80 Inc. VAT £159.00 Ex. VAT

    Frequently asked questions

    For full details on returns, refunds, eligibility, and timeframes, please refer to our complete Refund Policy here:

    👉 Refund and Returns Policy

    If you are unsure whether your item qualifies for return, please contact our team before sending anything back and we’ll be happy to help.

    Lock the head, relieve pressure via the flush valve, twist off the old cartridge, fit the new one, then flush before returning equipment to service — the same quick-change process as the rest of the IX range, using 3/8" push-fit connections.

    Based on 180ppm influent hardness at bypass 0, the Medium cartridge is rated for 2,000 litres and the Large for 3,644 litres. Actual life will vary with your local water hardness and mineral profile.

    Yes — return it through IX Water's takeback scheme using the prepaid bag and QR code for resin regeneration and reuse.