
Restore the heavy-duty softening power of your system with the Genuine Kinetico Commercial 4040 Replacement Resin. This 22-litre pack contains premium-grade, high-capacity ion-exchange resin beads, specifically selected for the flow rates and pressure demands of the Kinetico 4040 Commercial Series.
In a commercial setting—whether it’s a laundromat, restaurant, or light industrial facility—water hardness can't be tolerated. This WRAS-approved resin is engineered for rapid ion exchange and maximum physical strength, ensuring it won't break down under the frequent regeneration cycles typical of high-demand environments.
Symptoms: When to Replace Your 4040 Resin
Unlike mechanical parts, resin wears out chemically and physically. You likely need a fresh 22L charge if you notice:
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Shorter Softening Cycles: If your system is regenerating much more frequently than it used to (without an increase in water usage), the resin beads have lost their "holding capacity" for hardness minerals.
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Persistent Hardness Leakage: If you are testing the water and seeing 10-20 ppm of hardness even right after a regeneration, the resin is likely "fouled" by iron or chlorine and can no longer reach 0 ppm.
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Significant Pressure Drop: Over years of use, resin beads can break down into "fines" (tiny fragments). These fragments pack together tightly, creating a sludge-like barrier that chokes your water pressure.
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Resin "Blowout" (Beads in Pipes): If an internal screen has failed and you’ve lost media into your plumbing, you need this 22L pack to refill the tanks to the correct freeboard level after repairing the internal hardware.
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Chlorine Degradation: If your feed water has high chlorine levels, the resin beads eventually turn "mushy." If you squeeze a few beads between your fingers and they smear like paste instead of rolling, the resin is dead.
Key Benefits
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Precisely Measured: 22L volume is the exact requirement for a full 4040 tank service—no guesswork or leftover waste.
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WRAS Approved: Certified for potable water use, ensuring compliance with commercial health and safety standards.
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Salt Efficiency: Fresh resin requires less brine contact time, reducing your monthly salt expenditure.
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High Kinetic Rate: Specifically designed for the non-electric, high-flow demand of the 4040 valve.
Technical Specifications
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Volume: 22 Litres
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Material: Strong Acid Cation (SAC) Resin
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Certification: WRAS Approved
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Compatibility: Exclusively for Kinetico Commercial 4040 Systems
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Included: 22L Resin & Step-by-Step Replacement Guide
When replacing the resin in a 4040, always take the opportunity to inspect the Upper and Lower Distributors. If you're putting 22L of premium resin into the tank, you want to be 100% sure the screens aren't cracked, or you'll be washing that brand-new resin straight down the drain or into your boiler!
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.