{"product_id":"ravenheat-csi-120-low-nox-expansion-vessel-8-litre-refurbished-mpn-0004vas11011-0","title":"Ravenheat CSI 120 Low NOx Expansion Vessel 8 Litre – Refurbished | MPN 0004VAS11011\/0","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003ePressure stability is the backbone of a safe and long-lasting heating system — and when that stability is compromised, the effects ripple through every component in your boiler. The \u003cstrong\u003eRavenheat CSI 120 Low NOx Expansion Vessel (MPN 0004VAS11011\/0)\u003c\/strong\u003e is designed to prevent exactly that. As water heats and expands within your sealed circuit, this vessel absorbs the resulting pressure changes quietly and continuously — shielding your boiler's internal components from the kind of stress that leads to premature wear, leaks, and costly repairs.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eWith an \u003cstrong\u003e8-litre capacity\u003c\/strong\u003e and a direct fit for the \u003cstrong\u003eRavenheat CSI 120 Low NOx\u003c\/strong\u003e boiler, this is a precise like-for-like replacement that restores your system's pressure management without any modifications or complications — simply fitted, immediately effective.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThis is a professionally refurbished genuine Ravenheat component, rigorously tested and verified by our technicians to meet full functionality standards before dispatch. Same performance as new. Smarter price.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"ai-optimize-59\"\u003eRavenheat CSI 120 Low NOx Expansion vessel\u003c\/li\u003e\n\u003cli class=\"ai-optimize-61\"\u003ePart Number: 0004VAS11011\/0\u003c\/li\u003e\n\u003cli class=\"ai-optimize-63\"\u003eCondition: Refurbished\u003c\/li\u003e\n\u003cli class=\"ai-optimize-65\"\u003eComes with 12-months warranty\u003c\/li\u003e\n\u003cli class=\"ai-optimize-67\"\u003eCompatible with a wide range of Ravenheat boilers\u003cbr\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eGC Number: \u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eGC Number\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCSI 120 Low NOx NG\/LPG (up to serial no. 16007132)\u003c\/td\u003e\n\u003ctd\u003e47-581-37\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHE 150N \/ HE 150NT\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cbr\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eDelivery \u0026amp; Returns\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eOrders placed before 3\u003cstrong\u003e:00 PM\u003c\/strong\u003e are dispatched the same working day, with both \u003cstrong\u003estandard\u003c\/strong\u003e and \u003cstrong\u003enext working day delivery\u003c\/strong\u003e options available at checkout. Returns accepted within \u003cstrong\u003e30 days\u003c\/strong\u003e, provided the item is unused and in its original packaging.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Please confirm that \u003cstrong\u003eMPN 0004VAS11011\/0\u003c\/strong\u003e matches your existing part before placing your order. Installation must always be carried out by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e to ensure safety compliance and warranty validity.\u003c\/p\u003e\n\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ravenheat","offers":[{"title":"Refurbished","offer_id":47929813893285,"sku":null,"price":34.52,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0768\/1690\/8453\/files\/Frame34.png?v=1781809120","url":"https:\/\/ephsuppliers.com\/products\/ravenheat-csi-120-low-nox-expansion-vessel-8-litre-refurbished-mpn-0004vas11011-0","provider":"Elite Plumbing \u0026 Heating Suppliers Ltd","version":"1.0","type":"link"}