{"product_id":"electrolytic-scale-reducer-22mm-kpesr22-keyplumb","title":"KeyPlumb 22mm Electrolytic Scale Reducer | WRAS Approved | No Chemicals | KPESR22","description":"\u003cp\u003eProtect your entire plumbing system from limescale damage with the \u003cstrong\u003eKeyPlumb 22mm Electrolytic Scale Reducer\u003c\/strong\u003e (KPESR22). WRAS-approved and completely passive — no chemicals, no filters, no electricity, no ongoing costs. The 22mm compression fitting integrates directly into your cold water rising main or primary circuit, using proven electrolytic technology to prevent scale build-up at the source. Ideal for larger-bore pipework and whole-house installations in hard water areas.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWRAS Approved\u003c\/strong\u003e — certified for use in UK potable (drinking) water systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo Chemicals Required\u003c\/strong\u003e — no salts, additives, or chemical treatments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero Maintenance\u003c\/strong\u003e — no filters to replace, no ongoing costs; passive system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo Power Required\u003c\/strong\u003e — works from water flow alone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhole-House Protection\u003c\/strong\u003e — install on rising main or primary circuit to protect boilers, appliances, and pipework\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e22mm Compression Fitting\u003c\/strong\u003e — suits larger-bore pipework; straightforward installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreserves Water Quality\u003c\/strong\u003e — maintains natural mineral content; no brine discharge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdeal for Hard Water Areas\u003c\/strong\u003e — recommended where calcium carbonate exceeds 200ppm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specification\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e KeyPlumb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU \/ Model:\u003c\/strong\u003e KPESR22\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarcode (EAN):\u003c\/strong\u003e 5056277502193\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 22mm compression fitting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTechnology:\u003c\/strong\u003e Electrolytic scale reduction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e WRAS approved\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Type:\u003c\/strong\u003e Compression fittings (both ends)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.15kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e None required (passive system)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintenance:\u003c\/strong\u003e None required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHS Code:\u003c\/strong\u003e 842121\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eKeyPlumb 22mm electrolytic scale reducer unit\u003c\/li\u003e\n\u003cli\u003e22mm compression fittings (both ends)\u003c\/li\u003e\n\u003cli\u003eInstallation instructions\u003c\/li\u003e\n\u003cli\u003eWRAS certification documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAlso Available\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/electrolytic-scale-reducer-15mm-kpesr15-keyplumb\"\u003eKeyPlumb 15mm Electrolytic Scale Reducer | WRAS Approved | KPESR15\u003c\/a\u003e — for standard 15mm cold water rising mains\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow does an electrolytic scale reducer work?\u003c\/strong\u003e\u003cbr\u003eAs water passes through the unit, the electrolytic process alters the structure of calcium and magnesium minerals so they remain suspended in the water rather than forming hard scale deposits on pipes, heating elements, and appliances. No chemicals or power are required — the reaction is triggered by water flow alone.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen should I choose 22mm over 15mm?\u003c\/strong\u003e\u003cbr\u003eChoose the 22mm version when your rising main or primary circuit uses 22mm copper pipe. This is common in larger properties, older installations, or where higher flow rates are required. If your pipework is 15mm, see the \u003ca href=\"\/products\/electrolytic-scale-reducer-15mm-kpesr15-keyplumb\"\u003eKPESR15 15mm version\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhere should I install it?\u003c\/strong\u003e\u003cbr\u003eInstall on the cold water rising main immediately after the stopcock, or on the primary circuit feed, for whole-house protection. Professional installation by a qualified plumber is recommended.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this suitable for drinking water systems?\u003c\/strong\u003e\u003cbr\u003eYes — WRAS approval confirms this unit is safe for use in potable (drinking) water systems and complies with the Water Supply (Water Fittings) Regulations. It does not add chemicals or alter the taste of your water.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow long does it last?\u003c\/strong\u003e\u003cbr\u003eThe electrolytic elements are designed for long-term passive performance, typically 10+ years in normal use, with no servicing or replacement parts required.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I order if the item shows as out of stock?\u003c\/strong\u003e\u003cbr\u003eYes — we can fulfil this product even when stock shows as zero. Place your order as normal and we’ll confirm lead time with you. For urgent enquiries, call us on \u003ca href=\"tel:01603381095\"\u003e01603 381095\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eDelivery Information\u003c\/h2\u003e\n\u003cp\u003eThis is a small, postable item covered by a one-off small item delivery charge. You can combine it with other small items in a single order and pay just one delivery charge. \u003ca href=\"\/collections\/small-items\" target=\"_blank\"\u003eBrowse all items covered by the small delivery charge\u003c\/a\u003e.\u003c\/p\u003e","brand":"KeyPlumb","offers":[{"title":"Default Title","offer_id":53075127927121,"sku":"K11841","price":14.2,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/3687\/9441\/files\/k11841.jpg-26694-extra-large.jpg?v=1787647294","url":"https:\/\/www.bubblegumbathrooms.com\/products\/electrolytic-scale-reducer-22mm-kpesr22-keyplumb","provider":"Bubblegum Bathrooms","version":"1.0","type":"link"}