15mm Full Flow - Installation Kits
– Our most popular 15mm full flow kits include all the fittings required to install a water softener on a 15mm direct or indirect system - for maximising flow, follow the installation instructions below.
Important Note: Most bypass sets tend to stick and become difficult to use over time. We don't use those and instead use a high-quality, Easi-Turn valve set that might cost a bit more, but is definitely worth the money!
15mm Full Flow Kit with 12mm Metal-Braided Hoses
Best for: Gravity-fed systems with loft tank storage.
What’s in the kit:
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15mm full-flow Easi-Turn Bypass set inc tees with built-in Non-Return Valve
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Pair of 12mm x 0.75m braided hoses (with washers)
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2m length of ½” overflow hose
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5m length of ⅜” drain hose
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⅜” plumbing-out kit
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⅜” and ½” air gap fittings
💡 With this kit, you’ll have all the essential components in one box — making installation smoother and simpler.
15mm Full Flow Kit with 19mm Metal-Braided Hoses
Best for: Combination boiler systems — where maximising flow rates is important, but the incoming water main is still 15mm.
This kit includes everything you’ll need to install a water softener on a 15mm direct or indirect system, with the added benefit of larger 19mm hoses. The bigger hose size helps maintain a stronger, more consistent flow rate — ideal for homes with combination boilers.
What’s in the kit:
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15mm full-flow Easi-Turn Bypass set inc tees with built-in Non-Return Valve
-
Pair of 19mm x 0.75m braided hoses (with washers)
-
2m length of ½” overflow hose
-
5m length of ⅜” drain hose
-
⅜” plumbing-out kit
-
⅜” and ½” air gap fittings
💡 The larger 19mm hoses are the key difference in this kit, helping to prevent any restriction in water flow through your system.
