{"product_id":"glowworm-ultracom-2-expansion-vessel-0020097328-prv-0020014173-new","title":"GLOWWORM ULTRACOM 2 EXPANSION VESSEL 0020097328 \u0026 PRV 0020014173 New","description":"\u003ch1\u003eGLOWWORM ULTRACOM 2 EXPANSION VESSEL 0020097328 \u0026amp; PRV 0020014173 New\u003c\/h1\u003e\n\u003ch2\u003e\u003cspan\u003eProduct Overview\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe \u003cstrong\u003eGLOWWORM ULTRACOM 2 EXPANSION VESSEL 0020097328 \u0026amp; PRV 0020014173\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e is a replacement kit designed for use within selected Glowworm heating systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis kit combines two important components of the sealed heating system: the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eexpansion vessel\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, which accommodates the expansion of heated system water to help maintain stable operating pressure, and the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003epressure relief valve (PRV)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, which is designed to safely release excess pressure if the system exceeds its designed operating limit. Together, these components help protect the boiler and heating system from excessive pressure and support safe, reliable operation.\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\u003eThe expansion vessel contains an internal air chamber that absorbs pressure increases as the heating system warms up. If the vessel loses its charge or the internal diaphragm fails, system pressure can rise excessively, causing the PRV to discharge water. Once a PRV has operated repeatedly, it may no longer reseal correctly and may also require replacement.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eTypical symptoms linked to a faulty expansion vessel or PRV include:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eRapid boiler pressure increases when the heating is operating\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePressure relief valve leaking or discharging water\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\u003eBoiler pressure dropping after cooling\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWater escaping from the PRV discharge pipe\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePressure-related boiler lockouts or fault codes\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eReplacing both the expansion vessel and PRV together may help restore stable system pressure and reliable boiler operation.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eCompatibility\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eManufacturer Part Numbers (MPN): 0020097328 \u0026amp; 0020014173\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis part is designed for selected models within the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eGlowworm Ultracom 2\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e range.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003ePlease strictly verify the manufacturer part numbers \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e0020097328\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e and \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e0020014173\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e against your boiler's technical manual, exploded parts diagram, or existing components before ordering to guarantee correct fitment.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eSafety Advice\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eBoiler parts involve gas, water, pressure, and heating system components. Installation and servicing must be carried out by a Gas Safe registered engineer in accordance with current regulations and manufacturer instructions.\u003c\/em\u003e\u003c\/p\u003e","brand":"National Boiler Spares","offers":[{"title":"Default Title","offer_id":44361237659751,"sku":"N8276-C","price":67.36,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0615\/0923\/8887\/files\/515-R13IZuL._AC_SL1000_3065428f-b7f8-4c78-b24c-210b7c3dc42b.jpg?v=1785926562","url":"https:\/\/nationalboilerspares.co.uk\/products\/glowworm-ultracom-2-expansion-vessel-0020097328-prv-0020014173-new","provider":"National Boiler Spares","version":"1.0","type":"link"}