{"product_id":"8-litre-expansion-vessel-safety-for-unvented-hot-water-systems","title":"8 Litre Expansion Vessel – Safety for Unvented Hot Water Systems","description":"\u003cb\u003e8 Litre Expansion Vessel – Safety for Unvented Hot Water Systems\u003cbr\u003e\u003c\/b\u003e\u003cbr\u003eThe 8 Litre Expansion Vessel is an essential safety component for any unvented hot water system. Designed for compatibility with TESY Hot Water Cylinders ranging from 30 to 150 litres, this expansion vessel ensures your installation remains safe, efficient, and compliant with UK regulations. Its robust capacity and compact footprint make it suitable for a wide range of domestic and light commercial applications.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eWhy Choose the 8 Litre Expansion Vessel?\u003cbr\u003e\u003c\/b\u003e\u003cbr\u003eThe 8 Litre Expansion Vessel is engineered to absorb excess pressure caused by water expansion during the heating cycle. By maintaining stable system pressure, it protects your pipework, appliances, and fittings from unnecessary stress and potential leaks. This vessel is a recommended addition for all unvented hot water installations, particularly when using TESY cylinders.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eKey Features\u003cbr\u003e\u003c\/b\u003e\u003cbr\u003eRobust Capacity: 8 litre volume, ideal for hot water systems with 30–150 litre cylinders.\u003cbr\u003eCompact Design: At just 345 mm in length and 190 mm in width, it fits easily into most airing cupboards or plant rooms.\u003cbr\u003eEasy Connection: 22 mm thread diameter for straightforward installation with standard pipework.\u003cbr\u003eQuality Construction: Manufactured to meet stringent UK safety standards for unvented systems.\u003cbr\u003eFlexible Mounting: No wall bracket required for most installations, keeping fitting simple and tidy.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eInstallation \u0026amp; Compliance\u003cbr\u003e\u003c\/b\u003e\u003cbr\u003eProper installation of an 8 Litre Expansion Vessel is required under UK Building Regulations G3 for any unvented hot water system. For best results, pair this vessel with a TESY hot water cylinder and a pressure relief valve to ensure full compliance and system safety. For installation accessories, browse our heating accessories.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eDelivery \u0026amp; Support\u003cbr\u003e\u003c\/b\u003e\u003cbr\u003eEnjoy free delivery to UK mainland addresses on all orders over £100. For non-mainland UK delivery or trade enquiries, please contact us before purchasing.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAdditional Information \u003cbr\u003e\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eFREE Delivery:\u003c\/b\u003e Available on orders over £100. Next working day delivery is available for orders placed before 2 pm. Please \u003ci\u003e\u003cb\u003e\u003ca href=\"https:\/\/www.modernheat.co.uk\/delivery-information\/\"\u003eclick here\u003c\/a\u003e\u003c\/b\u003e\u003c\/i\u003e to check delivery to your area.\u003cbr\u003e\u003cbr\u003eExplore \u003ci\u003e\u003cb\u003e\u003ca href=\"https:\/\/www.modernheat.co.uk\"\u003eour full range of products\u003c\/a\u003e\u003c\/b\u003e\u003c\/i\u003e for more options that suit your home.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eNeed Assistance? \u003c\/b\u003eContact us for expert advice on \u003cb\u003e0161 439 1400.\u003c\/b\u003e\u003cbr\u003e\u003cbr\u003eLooking for reliable hot water cylinders, electric heating solutions, or technical support? \u003ci\u003e\u003cb\u003e\u003ca href=\"https:\/\/tesy.com\/\"\u003eVisit tesy.com\u003c\/a\u003e\u003c\/b\u003e\u003c\/i\u003e for full product information, technical documentation, and expert advice.","brand":"ModernHeatUK","offers":[{"title":"Default Title","offer_id":53767939424583,"sku":"8 Litre Safery Expansion Vessel - Model 8","price":34.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/0535\/7127\/files\/bc97b324-gqhnhqcode1.jpg?v=1776943622","url":"https:\/\/www.modernheat.co.uk\/products\/8-litre-expansion-vessel-safety-for-unvented-hot-water-systems","provider":"Modern Heat","version":"1.0","type":"link"}