{"product_id":"viessmann-expansion-vessel-8l-7837231","title":"Viessmann Vitodens 100 WB1C Expansion Vessel 8L – Refurbished | Part No. 7837231","description":"\u003cp\u003eA healthy expansion vessel is essential to keeping your Viessmann boiler running at the correct pressure. When the diaphragm fails or the vessel loses pre-charge, every expansion cycle forces the pressure relief valve to activate — putting stress on seals, pipework and the heat exchanger. The \u003cstrong\u003eViessmann Expansion Vessel 8L (Part No. 7837231)\u003c\/strong\u003e is the correct replacement designed specifically for the \u003cstrong\u003eVitodens 100 WB1C\u003c\/strong\u003e range, restoring stable pressure control and protecting your system from recurring pressure-related faults.\u003c\/p\u003e\n\n\u003cp\u003eThis is a professionally refurbished genuine Viessmann component. Each unit is stripped, cleaned, and pressure-tested to OEM specifications before dispatch — delivering manufacturer-grade performance at a significantly reduced cost. The \u003cstrong\u003e8-litre capacity\u003c\/strong\u003e fits directly without modification, allowing a straightforward, compliant installation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCompatible Viessmann Models\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRange\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eVitodens 100 WB1C\u003c\/td\u003e\n\u003ctd\u003eCombi Boiler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOEM Quality. Proven Performance. Backed by Warranty.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEvery refurbished vessel is inspected and pressure-tested to OEM standards before dispatch. This unit stabilises system pressure, prevents overpressure events, and reduces long-term wear. Supplied with a full \u003cstrong\u003e12-month warranty\u003c\/strong\u003e — a smart, cost-effective alternative to purchasing new.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDelivery \u0026amp; Returns\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOrders placed before \u003cstrong\u003e3:00 PM\u003c\/strong\u003e are dispatched the same working day. \u003cstrong\u003eStandard\u003c\/strong\u003e and \u003cstrong\u003enext working day delivery\u003c\/strong\u003e options are available at checkout. Returns accepted within \u003cstrong\u003e30 days\u003c\/strong\u003e, provided the item is unused and in its original condition.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Please confirm that part number \u003cstrong\u003e7837231\u003c\/strong\u003e matches your existing vessel before placing your order. Installation must be carried out by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e to ensure safety compliance and warranty validity.\u003c\/p\u003e","brand":"Viessmann","offers":[{"title":"Refurbished","offer_id":47944892547237,"sku":"EXP-2981-A-BC","price":43.7,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0768\/1690\/8453\/files\/Frame141.png?v=1782413061","url":"https:\/\/ephsuppliers.com\/products\/viessmann-expansion-vessel-8l-7837231","provider":"Elite Plumbing \u0026 Heating Suppliers Ltd","version":"1.0","type":"link"}