{"product_id":"heatrae-sadia-pack-u2-unvented-water-expansion-vessel-kit-95970351","title":"Heatrae Sadia Pack U2 Unvented Water Expansion Vessel Kit 95970351","description":"\u003ch2 style=\"text-align: center;\"\u003e\u003cstrong\u003e\u003cem\u003e\u003cspan data-teams=\"true\"\u003eThis product is sourced directly from the supplier. Please \u003ca rel=\"noopener\" title=\"Contact Us\" href=\"https:\/\/arcanu.com\/pages\/contact-us\" target=\"_blank\"\u003eget in touch\u003c\/a\u003e, and we’ll confirm delivery details.\u003c\/span\u003e\u003c\/em\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003ch3\u003eSpecifically designed for Hotflo and Multipoint systems, the Heatrae Sadia Pack U2 Unvented Water Expansion Vessel Kit efficiently stabilises pressure, prevents backflow, cross-contamination and overpressurisation while ensuring safe, compliant operation\u003c\/h3\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto [content-visibility:auto] supports-[content-visibility:auto]:[contain-intrinsic-size:auto_100lvh] R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:d45c81cf-8e7a-42c4-a23d-e64f000c97ed-3\" data-testid=\"conversation-turn-8\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"98f67cca-9884-4bc4-804b-7bc2f31cc25c\" dir=\"auto\" data-message-model-slug=\"gpt-5-3-mini\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"streaming-animation markdown prose dark:prose-invert w-full wrap-break-word light markdown-new-styling\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-(--header-height)\" dir=\"auto\" data-turn-id=\"69bff58e-688f-49a6-8f65-6db5c2246f04\" data-testid=\"conversation-turn-11\" data-scroll-anchor=\"false\" data-turn=\"user\"\u003e\u003c\/section\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto [content-visibility:auto] supports-[content-visibility:auto]:[contain-intrinsic-size:auto_100lvh] R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:d45c81cf-8e7a-42c4-a23d-e64f000c97ed-5\" data-testid=\"conversation-turn-12\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"7504a45a-e749-4d06-ac8c-bf56b44cb39b\" dir=\"auto\" data-message-model-slug=\"gpt-5-3-mini\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full wrap-break-word light markdown-new-styling\"\u003e\n\u003cp data-start=\"0\" data-end=\"409\"\u003eSuited specifically for unvented hot water systems, the Heatrae Sadia Pack U2 Unvented Water Expansion Vessel Kit includes a pre-charged 4.1 Bar 2 Litre expansion vessel, 1\/2\" MBSP x 15mm 6 Bar pressure relief valve and check valve. Stabilising system pressure during normal operation, the expansion vessel absorbs the expanded water to prevent pressure build-up. If pressure rises above safe operating limits, the pressure relief valve automatically discharges excess water until safe pressure levels are reached again. The check valve prevents any backflow or cross-contamination of hot and cold water. By automatically releasing water when safe preset levels are exceeded, the Heatrae Sadia Pack U2 safeguards key components from system damage or failure. Ideal for use with Heatrae Sadia Hotflo installations and Multipoint unvented water heaters, it supports compliance with unvented hot water system regulations and safety standards. The Heatrae Sadia Pack U2 ensures efficient system operation by enhancing performance and longevity while reducing risk of failure and damage caused by overpressurisation.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eFeatures\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eIncludes expansion vessel, pressure relief valve and check valve \u003c\/strong\u003e- complete Heatrae Sadia Pack U2 kit for efficient system pressure control\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eCompatible with Multipoint 10 and 15 Litre unvented water heaters\u003c\/strong\u003e - designed for use within Heatrae Sadia unvented systems\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eAbsorbs expanded water during operation\u003c\/strong\u003e - accommodates thermal expansion to protect against overpressurisation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003ePre-charged 4.1 Bar expansion vessel\u003c\/strong\u003e - ensures reliable performance in hot water systems\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003e1\/2\" MBSP and 15mm compression fittings\u003c\/strong\u003e - allows easy integration into standard threaded connections and existing hot water installations\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003eSpecification\u003c\/span\u003e\u003c\/h3\u003e\n\u003ctable class=\"ecwid-description-table\" style=\"width: 100%; height: 97.969px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 24.6326%;\"\u003eKit Includes:\u003c\/td\u003e\n\u003ctd style=\"width: 74.9288%;\"\u003e\n\u003cul\u003e\n\u003cli\u003e4.1 Bar 2 Litre Expansion Vessel\u003c\/li\u003e\n\u003cli\u003e1\/2\" MBSP x 15mm 6 Bar Pressure Relief Valve\u003c\/li\u003e\n\u003cli\u003eCheck Valve\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 24.6326%;\"\u003ePack\u003c\/td\u003e\n\u003ctd style=\"width: 74.9288%;\"\u003eU2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 24.6326%; height: 19.5938px;\"\u003ePart Code\u003c\/td\u003e\n\u003ctd style=\"width: 74.9288%; height: 19.5938px;\"\u003e95970351\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Arcanu","offers":[{"title":"Default Title","offer_id":54770722439436,"sku":"H14.K23.02459","price":46.99,"currency_code":"GBP","in_stock":true}],"url":"https:\/\/arcanu.com\/products\/heatrae-sadia-pack-u2-unvented-water-expansion-vessel-kit-95970351","provider":"Arcanu","version":"1.0","type":"link"}