{"product_id":"expansion-vessel-repair-kit-kit-3-5113000-248772-5114691-181051-87161425000","title":"Expansion Vessel Repair Kit (Kit 3) - 5113000,248772,5114691,181051,87161425000","description":"\u003ch1\u003e\u003cspan\u003eExpansion Vessel Repair Kit (Kit 3) 5113000, 248772, 5114691, 181051, 87161425000\u003c\/span\u003e\u003c\/h1\u003e\n\u003ch2\u003e\u003cspan\u003eProduct Overview\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eExpansion Vessel Repair Kit (Kit 3)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is a servicing kit designed to assist with the maintenance and repair of compatible boiler expansion vessel systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis kit contains replacement valve components used to restore the function of an expansion vessel by replacing worn or damaged service parts. Expansion vessels are an important part of sealed heating systems, helping to absorb water expansion as the system heats up and maintaining stable operating pressure.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe repair kit provides a cost-effective alternative to replacing the complete expansion vessel where compatible service components are required.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eℹ️ \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eProduct Condition Options:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis part may be available in \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eNew or Refurbished\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e condition. Please check the available options from the dropdown menu.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eTechnical Insight \u0026amp; Common Failure Symptoms\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAn expansion vessel uses an internal diaphragm and air charge to manage pressure changes within a sealed heating system. Over time, the valve components may become worn, damaged, or require replacement during servicing.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eTypical symptoms linked to expansion vessel valve problems include:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eLoss of correct expansion vessel pressure\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDifficulty maintaining stable boiler pressure\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFrequent need to repressurise the heating system\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePressure fluctuations during heating operation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eExpansion vessel servicing or maintenance requirements\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWater pressure-related boiler issues\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eReplacing worn valve components may help restore correct expansion vessel operation and improve system reliability.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eKit Contents\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe kit includes components designed for expansion vessel servicing, including:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eValve cores\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eValve removal tool\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eValve extension components\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003ePlease refer to the product images for the exact contents supplied.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\n\u003cspan\u003eCompatibility\u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis repair kit is designed for use with compatible boiler expansion vessel systems across selected heating ranges.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003ePlease strictly verify the part numbers against your boiler's technical manual, exploded parts diagram, or existing expansion vessel components before ordering to guarantee compatibility.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eSafety Advice\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eBoiler pressure components require correct installation and testing. Servicing of expansion vessels and heating systems should be carried out by a suitably qualified heating engineer in accordance with current safety regulations and manufacturer instructions.\u003c\/span\u003e\u003c\/p\u003e","brand":"National Boiler Spares","offers":[{"title":"Default Title","offer_id":44368276095079,"sku":"N2296","price":9.01,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0615\/0923\/8887\/files\/Blank-1-5-scaled_fdb37a59-5e53-43b2-9676-d1fee88f7e8a.jpg?v=1786020383","url":"https:\/\/nationalboilerspares.co.uk\/products\/expansion-vessel-repair-kit-kit-3-5113000-248772-5114691-181051-87161425000","provider":"National Boiler Spares","version":"1.0","type":"link"}