{"product_id":"vaillant-80-125mm-flue-sliding-sleeve-303215","title":"Vaillant 80\/125 mm Sliding Sleeve | 303215 | ecoTEC Flue Accessory","description":"\u003cdiv style=\"font-size: 16px; max-width: 900px; margin: 0 auto; font-family: Arial, Helvetica, sans-serif; color: #222; line-height: 1.6;\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eVaillant 80\/125 mm Sliding Sleeve\u003c\/strong\u003e is a genuine \u003cstrong\u003eVaillant flue accessory\u003c\/strong\u003e designed to make the installation, adjustment and future servicing of an \u003cstrong\u003e80\/125 mm concentric air\/flue system\u003c\/strong\u003e simpler. It allows the flue pipework to be connected and disconnected cleanly, making it especially useful for \u003cstrong\u003eflue repairs\u003c\/strong\u003e, extensions and installations where access is restricted.\u003c\/p\u003e\n\u003cp\u003eManufactured for use with compatible \u003cstrong\u003eVaillant ecoTEC commercial boiler\u003c\/strong\u003e installations, this \u003cstrong\u003esliding sleeve\u003c\/strong\u003e helps create a secure, professional flue connection while supporting correct removal of combustion gases. It is a practical choice for \u003cstrong\u003eGas Safe registered installers\u003c\/strong\u003e, heating engineers and homeowners arranging a boiler flue installation or upgrade.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1 1 130px; min-width: 130px; border: 2px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e80\/125 mm\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px;\"\u003eFlue diameter\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 130px; min-width: 130px; border: 2px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003e303215\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px;\"\u003eVaillant part number\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 130px; min-width: 130px; border: 2px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003ePPs\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px;\"\u003eSliding sleeve material\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 130px; min-width: 130px; border: 2px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003eecoTEC\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px;\"\u003eCompatible systems\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 130px; min-width: 130px; border: 2px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003eConcentric\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px;\"\u003eAir\/flue application\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 130px; min-width: 130px; border: 2px solid #008377CF; border-radius: 8px; padding: 14px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; color: #008377cf;\"\u003eTrade\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px;\"\u003eInstaller friendly design\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left: 6px solid #008377CF; background: #f2faf8; padding: 14px 16px; border-radius: 6px; margin: 20px 0;\"\u003e\n\u003cstrong style=\"color: #008377cf;\"\u003eUseful information:\u003c\/strong\u003e The sliding sleeve is intended to provide \u003cstrong\u003estraightforward installation and disconnection\u003c\/strong\u003e of the air\/flue pipe from the boiler, which can save time during commissioning, servicing or future maintenance.\u003c\/div\u003e\n\u003cdiv style=\"border-left: 6px solid #d97706; background: #fff8ec; padding: 14px 16px; border-radius: 6px; margin: 20px 0;\"\u003e\n\u003cstrong\u003eCompatibility note:\u003c\/strong\u003e This sleeve is for \u003cstrong\u003e80\/125 mm diameter Vaillant concentric air\/flue systems\u003c\/strong\u003e. Always confirm the required flue configuration and component compatibility against the installation instructions for the specific Vaillant boiler before ordering.\u003c\/div\u003e\n\u003cdiv style=\"border-left: 6px solid #d64545; background: #fdf1f1; padding: 14px 16px; border-radius: 6px; margin: 20px 0;\"\u003e\n\u003cstrong\u003eSafety and installation:\u003c\/strong\u003e Flue components must be installed in accordance with the boiler manufacturer’s instructions and applicable UK requirements. Installation and commissioning should be carried out by a competent, \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e.\u003c\/div\u003e\n\u003cdiv style=\"margin: 28px 0 10px; font-size: 20px; font-weight: bold; color: #008377cf; border-bottom: 3px solid #008377CF; padding-bottom: 6px;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 14px;\"\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; border: 1px solid #d9e6e3; border-top: 5px solid #008377CF; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px;\"\u003eGenuine Vaillant Component\u003c\/div\u003e\n\u003cp style=\"margin: 0;\"\u003eDesigned as part of the Vaillant \u003cstrong\u003e80\/125 mm flue system\u003c\/strong\u003e, helping ensure a correctly matched connection for compatible boiler installations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; border: 1px solid #d9e6e3; border-top: 5px solid #008377CF; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px;\"\u003eSimplifies Flue Installation\u003c\/div\u003e\n\u003cp style=\"margin: 0;\"\u003eThe \u003cstrong\u003esliding sleeve\u003c\/strong\u003e enables easier connection and disconnection of the flue pipework, particularly where space or movement is limited.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; border: 1px solid #d9e6e3; border-top: 5px solid #008377CF; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px;\"\u003eIdeal for Repairs\u003c\/div\u003e\n\u003cp style=\"margin: 0;\"\u003eA practical solution for \u003cstrong\u003eflue run repairs\u003c\/strong\u003e or joining flue sections in awkward to reach locations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; border: 1px solid #d9e6e3; border-top: 5px solid #008377CF; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px;\"\u003eSupports Servicing\u003c\/div\u003e\n\u003cp style=\"margin: 0;\"\u003eMakes future access to the air\/flue connection more straightforward, supporting routine \u003cstrong\u003eboiler servicing\u003c\/strong\u003e and maintenance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; border: 1px solid #d9e6e3; border-top: 5px solid #008377CF; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px;\"\u003eDurable PPs Construction\u003c\/div\u003e\n\u003cp style=\"margin: 0;\"\u003eManufactured in \u003cstrong\u003epolypropylene (PPs)\u003c\/strong\u003e for a lightweight, robust flue accessory suitable for domestic and commercial heating installations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; min-width: 260px; border: 1px solid #d9e6e3; border-top: 5px solid #008377CF; border-radius: 8px; padding: 16px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377cf; margin-bottom: 6px;\"\u003eProfessional Finish\u003c\/div\u003e\n\u003cp style=\"margin: 0;\"\u003eHelps installers achieve a neat, secure and compliant looking \u003cstrong\u003econcentric flue connection\u003c\/strong\u003e as part of a complete Vaillant system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin: 30px 0 10px; font-size: 20px; font-weight: bold; color: #008377cf; border-bottom: 3px solid #008377CF; padding-bottom: 6px;\"\u003eTechnical Specifications\u003c\/div\u003e\n\u003cdiv style=\"border: 2px solid #008377CF; border-radius: 8px; overflow: hidden;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 10px 14px;\"\u003eProduct Identification\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #d9e6e3;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: bold;\"\u003eBrand\u003c\/div\u003e\n\u003cdiv style=\"flex: 1.4; padding: 10px 14px;\"\u003eVaillant\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f5faf9; border-bottom: 1px solid #d9e6e3;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: bold;\"\u003eManufacturer part number (MPN)\u003c\/div\u003e\n\u003cdiv style=\"flex: 1.4; padding: 10px 14px;\"\u003e303215\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #d9e6e3;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: bold;\"\u003eProduct type\u003c\/div\u003e\n\u003cdiv style=\"flex: 1.4; padding: 10px 14px;\"\u003eSliding sleeve\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f5faf9; border-bottom: 1px solid #d9e6e3;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: bold;\"\u003eFlue category\u003c\/div\u003e\n\u003cdiv style=\"flex: 1.4; padding: 10px 14px;\"\u003eConcentric air\/flue accessory\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 10px 14px;\"\u003eDimensions and Construction\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #d9e6e3;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: bold;\"\u003eFlue diameter\u003c\/div\u003e\n\u003cdiv style=\"flex: 1.4; padding: 10px 14px;\"\u003e80\/125 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f5faf9; border-bottom: 1px solid #d9e6e3;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: bold;\"\u003eMaterial\u003c\/div\u003e\n\u003cdiv style=\"flex: 1.4; padding: 10px 14px;\"\u003ePolypropylene (PPs)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #d9e6e3;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: bold;\"\u003eApproximate product weight\u003c\/div\u003e\n\u003cdiv style=\"flex: 1.4; padding: 10px 14px;\"\u003e0.4 kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 10px 14px;\"\u003eCompatibility and Application\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #d9e6e3;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: bold;\"\u003eCompatible systems\u003c\/div\u003e\n\u003cdiv style=\"flex: 1.4; padding: 10px 14px;\"\u003eCompatible Vaillant ecoTEC commercial boiler installations using an 80\/125 mm concentric air\/flue system\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f5faf9; border-bottom: 1px solid #d9e6e3;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: bold;\"\u003eTypical applications\u003c\/div\u003e\n\u003cdiv style=\"flex: 1.4; padding: 10px 14px;\"\u003eFlue installation, flue repairs, system extensions and servicing access\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #d9e6e3;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: bold;\"\u003eInstallation\u003c\/div\u003e\n\u003cdiv style=\"flex: 1.4; padding: 10px 14px;\"\u003eTo be installed in accordance with Vaillant installation instructions and UK regulatory requirements\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; padding: 10px 14px;\"\u003eCertification and Warranty\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #ffffff; border-bottom: 1px solid #d9e6e3;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: bold;\"\u003eInstallation standard\u003c\/div\u003e\n\u003cdiv style=\"flex: 1.4; padding: 10px 14px;\"\u003eGas Safe registered installer installation recommended\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #f5faf9;\"\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-weight: bold;\"\u003eWarranty\u003c\/div\u003e\n\u003cdiv style=\"flex: 1.4; padding: 10px 14px;\"\u003eManufacturer warranty terms apply, please retain proof of purchase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin: 30px 0 10px; font-size: 20px; font-weight: bold; color: #008377cf; border-bottom: 3px solid #008377CF; padding-bottom: 6px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdetails style=\"border: 1px solid #d9e6e3; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #ffffff; padding: 12px 14px; font-weight: bold; cursor: pointer;\"\u003eWhat is the Vaillant 80\/125 mm sliding sleeve used for?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px;\"\u003eIt is used to connect and disconnect an \u003cstrong\u003e80\/125 mm concentric air\/flue pipe\u003c\/strong\u003e on compatible Vaillant installations. This makes it particularly useful for \u003cstrong\u003eflue repairs\u003c\/strong\u003e, adjustments and maintenance work.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #d9e6e3; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #ffffff; padding: 12px 14px; font-weight: bold; cursor: pointer;\"\u003eWhich Vaillant boilers is this sliding sleeve compatible with?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px;\"\u003eIt is intended for compatible \u003cstrong\u003eVaillant ecoTEC commercial boiler\u003c\/strong\u003e installations that use an \u003cstrong\u003e80\/125 mm concentric flue system\u003c\/strong\u003e. Always check the boiler and flue installation instructions before purchasing.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #d9e6e3; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #ffffff; padding: 12px 14px; font-weight: bold; cursor: pointer;\"\u003eCan a homeowner install this flue accessory?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px;\"\u003eFlue work should be completed by a competent \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e. Correct installation is essential for safe operation and compliance with the boiler manufacturer’s requirements.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #d9e6e3; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #ffffff; padding: 12px 14px; font-weight: bold; cursor: pointer;\"\u003eWhat material is the sliding sleeve made from?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px;\"\u003eThe sleeve is manufactured from \u003cstrong\u003epolypropylene (PPs)\u003c\/strong\u003e, a durable and lightweight material commonly used in Vaillant concentric air\/flue systems.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #d9e6e3; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #ffffff; padding: 12px 14px; font-weight: bold; cursor: pointer;\"\u003eWhat is the part number for this product?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px;\"\u003eThe Vaillant manufacturer part number is \u003cstrong\u003e303215\u003c\/strong\u003e. This should be checked against your existing flue system or installation schedule before ordering.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Vaillant","offers":[{"title":"Default Title","offer_id":67655396819334,"sku":"303215","price":61.7,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Vaillant_80_125_Sliding_Sleeve_1.jpg?v=1792414463","url":"https:\/\/qualityheating.co.uk\/products\/vaillant-80-125mm-flue-sliding-sleeve-303215","provider":"AIZO Quality Heating","version":"1.0","type":"link"}