{"title":"Expansion Vessels","description":null,"products":[{"product_id":"expansion-vessel-12l-solar","title":"Expansion Vessel Solar","description":"\u003cp\u003eAn adequately sized expansion vessel is essential to protect sealed systems during stagnation conditions when extremely high temperatures can be generated in the collector circuit.\u003cbr\u003eAll our expansion vessels are suitable for use in Glycol filled systems.\u003cbr\u003e¾\" connection on vessels up to 50L.\u003cbr\u003e1\" connection on vessels 80L and upwards.\u003cbr\u003eVessels up to 25L are suitable for wall mounting using our connection set 53090040 (related item below).\u003cbr\u003eAll Vessels from 35L and upwards are for floor mounting.\u003c\/p\u003e","brand":"Zilmet UK Limited","offers":[{"title":"12L","offer_id":52722515870042,"sku":"51010012","price":50.0,"currency_code":"GBP","in_stock":true},{"title":"18L","offer_id":52722517836122,"sku":"51010118","price":47.0,"currency_code":"GBP","in_stock":true},{"title":"25L","offer_id":52722516296026,"sku":"51010024","price":52.0,"currency_code":"GBP","in_stock":true},{"title":"35L","offer_id":52722516656474,"sku":"51010035","price":91.0,"currency_code":"GBP","in_stock":true},{"title":"50L","offer_id":52722516951386,"sku":"51010050","price":112.0,"currency_code":"GBP","in_stock":true},{"title":"80L","offer_id":52722517246298,"sku":"51010080","price":154.0,"currency_code":"GBP","in_stock":true},{"title":"105L","offer_id":52722517541210,"sku":"51010100","price":231.0,"currency_code":"GBP","in_stock":true},{"title":"150L","offer_id":52722518327642,"sku":"51010150","price":541.0,"currency_code":"GBP","in_stock":true},{"title":"200L","offer_id":52722518491482,"sku":"51010201","price":639.0,"currency_code":"GBP","in_stock":true},{"title":"300L","offer_id":52722520588634,"sku":"51010301","price":1065.0,"currency_code":"GBP","in_stock":true},{"title":"500L","offer_id":52722522030426,"sku":"51010500","price":1417.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0942\/5354\/7866\/files\/BC_Upload_b0552806-c6b0-4f58-98b6-5a9627407e81.png?v=1763038647"},{"product_id":"cal-pro-heating-vessel-12l-c-w-bracket","title":"Cal-Pro Heating Vessel c\/w Bracket","description":"\u003cp\u003eIn a closed heating system, water cannot be compressed, and any increase in water volume due to the increase of temperature is absorbed by the expansion vessel. When water is cold, the pre-charge pressure of the tank presses the diaphragm against the tank. As the temperature increases, the expanded water volume pushes against the membrane and water enters the tank, providing additional space within the system. With the temperature decrease, the air cushion forces water back into the system. This allows the system to maintain the pressure, helping to reduce the energy consumption of the heating system.\u003c\/p\u003e\r\r\n\r\r\n\u003cp\u003eSuitable for all types of heating systems\u003cbr\u003e\r\r\nCarbon steel construction\u003cbr\u003e\r\r\nSBR synthetic rubber diaphragm according to DIN 4807-3\u003cbr\u003e\r\r\nHard-wearing epoxy polyester powder-coated finish\u003cbr\u003e\r\r\n100% Factory tested\u003cbr\u003e\r\r\nFully CPR compliant\u003c\/p\u003e","brand":"Zilmet UK Limited","offers":[{"title":"12L","offer_id":52722530582874,"sku":"51030012","price":27.0,"currency_code":"GBP","in_stock":true},{"title":"18L","offer_id":52722533761370,"sku":"51030018","price":30.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0942\/5354\/7866\/files\/BC_Upload_eca7ba5b-1245-4b19-8c68-c22737a10c43.png?v=1769180350"},{"product_id":"statico-8-litre-heating-expansion-vessel","title":"Statico SD Heating Expansion Vessel","description":"\u003cp\u003eIMI's Statico Heating Expansion Vessel is a robust, fixed-gas pressure vessel designed to maintain stable system pressure in heating, solar thermal, and cooling water applications. Its simple yet durable design ensures reliable performance without the need for auxiliary power, making it a practical choice for lower-output systems.\u003c\/p\u003e\n\u003cp\u003eBuilt for long-term reliability, the Statico vessel protects pumps, valves, and pipework from pressure fluctuations, helping to reduce maintenance needs and extend system lifespan.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFixed gas charge for consistent pressure control\u003c\/li\u003e\n\u003cli\u003eSuitable for heating, solar, and cooling systems\u003c\/li\u003e\n\u003cli\u003eSimple, robust design for long-term reliability\u003c\/li\u003e\n\u003cli\u003eOperates without auxiliary power\u003c\/li\u003e\n\u003cli\u003eProtects system components and reduces maintenance\u003c\/li\u003e\n\u003cli\u003eIdeal for lower-output applications\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IMI Hydronic Engineering","offers":[{"title":"8L","offer_id":53370424885594,"sku":"78070115","price":64.0,"currency_code":"GBP","in_stock":true},{"title":"12L","offer_id":53370430554458,"sku":"78070120","price":67.0,"currency_code":"GBP","in_stock":true},{"title":"18L","offer_id":53370431537498,"sku":"78070125","price":71.5,"currency_code":"GBP","in_stock":true},{"title":"25L","offer_id":53370432815450,"sku":"78070130","price":83.0,"currency_code":"GBP","in_stock":true},{"title":"35L","offer_id":53903772156250,"sku":"78070131","price":110.0,"currency_code":"GBP","in_stock":true},{"title":"50L","offer_id":53903775105370,"sku":"78070132","price":131.0,"currency_code":"GBP","in_stock":true},{"title":"80L","offer_id":53903777071450,"sku":"78070133","price":157.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0942\/5354\/7866\/files\/BC_Upload_bd0d946f-510d-4806-8df4-1afa9b93b728.png?v=1768833188"},{"product_id":"expansion-vessel-service-valve-kit","title":"Expansion Vessel Service Valve Kit","description":"\u003cp\u003e\u003cspan\u003eTo be used with the Safety Group Vessel Fixing Kit - 53090060 (ZL-4033-3\/4)\u003c\/span\u003e\u003c\/p\u003e","brand":"Reliable UK Trading Ltd","offers":[{"title":"Default Title","offer_id":53389226672474,"sku":"53090055","price":5.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0942\/5354\/7866\/files\/BC_Upload_4995059f-1027-4eab-a25f-7c5f228b9c59.jpg?v=1769006311"},{"product_id":"dlv-lock-shield-and-drain-for-expansion","title":"DLV Lock Shield and Drain for Expansion Vessel","description":"\u003cdiv class=\"flex flex-col text-sm pb-25\"\u003e\n\u003carticle 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 scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:497d74ac-995c-4c35-9931-3947586330b0-13\" data-testid=\"conversation-turn-22\" data-scroll-anchor=\"true\" data-turn=\"assistant\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:--spacing(4)] @w-sm\/main:[--thread-content-margin:--spacing(6)] @w-lg\/main:[--thread-content-margin:--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\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"315cea90-78d2-43a9-b60d-7becafff3f47\" dir=\"auto\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal [.text-message+\u0026amp;]:mt-1\" data-message-model-slug=\"gpt-5-mini\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[1px]\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full wrap-break-word dark markdown-new-styling\"\u003e\n\u003cp data-start=\"112\" data-end=\"417\"\u003eIMI's DLV Lock Shield \u0026amp; Drain Valve allows you to isolate, drain, and recharge an expansion vessel without emptying the heating or hot water system. Rated for temperatures up to 120°C and pressures up to 16 bar, it is suitable for heating, solar, and cooling water systems built to EN 12828 standards.\u003c\/p\u003e\n\u003cp data-start=\"419\" data-end=\"731\"\u003eConstructed from durable brass, the valve features female threads on both sides and a flat sealing union for direct connection to compatible expansion vessels. A DN15 ball valve with hose connection enables fast, safe draining, and the unit can only be closed using the supplied Allen key for secure operation.\u003c\/p\u003e\n\u003cp data-start=\"733\" data-end=\"752\"\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"755\" data-end=\"825\"\u003eIsolate, drain, and refill expansion vessels without system shutdown\u003c\/li\u003e\n\u003cli data-start=\"828\" data-end=\"879\"\u003eBrass construction for durability and reliability\u003c\/li\u003e\n\u003cli data-start=\"882\" data-end=\"933\"\u003eFemale thread connections with a flat sealing union\u003c\/li\u003e\n\u003cli data-start=\"936\" data-end=\"992\"\u003eDN15 ball valve with hose connection for fast draining\u003c\/li\u003e\n\u003cli data-start=\"995\" data-end=\"1051\"\u003eSuitable for heating, solar, and cooling water systems\u003c\/li\u003e\n\u003cli data-start=\"1054\" data-end=\"1106\"\u003eRated for -10°C to 120°C and up to 16 bar pressure\u003c\/li\u003e\n\u003cli data-start=\"1109\" data-end=\"1163\"\u003eCompatible with glycol-based system fluids up to 50%\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1165\" data-end=\"1258\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eA reliable, easy-to-use solution for safe expansion vessel maintenance and system protection.\u003c\/p\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\/article\u003e\n\u003c\/div\u003e","brand":"IMI Hydronic Engineering","offers":[{"title":"1\/2\"","offer_id":53574056673626,"sku":"78070170","price":35.45,"currency_code":"GBP","in_stock":true},{"title":"3\/4\"","offer_id":53574082560346,"sku":"78070175","price":37.2,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0942\/5354\/7866\/files\/BC_Upload_98fd2bf7-f5e8-4004-8084-4c847c3249da.jpg?v=1771408044"}],"url":"https:\/\/www.seconrenewables.com\/collections\/expansion-vessels.oembed","provider":"Secon Renewables","version":"1.0","type":"link"}