{"product_id":"glowworm-expansion-vessel-with-prv-0020020744-was-801666-2000801312","title":"Glowworm Expansion Vessel with PRV 0020020744 was 801666 2000801312","description":"\n    \u003ch1\u003eGlowworm Expansion Vessel with PRV 0020020744 was 801666 2000801312\u003c\/h1\u003e\n    \n    \u003ch2\u003eProduct Overview\u003c\/h2\u003e\n    \u003cp\u003eThe \u003cstrong\u003eGlowworm Expansion Vessel with PRV 0020020744 was 801666 2000801312\u003c\/strong\u003e is a critical component designed for specific \u003cstrong\u003eVaillant\u003c\/strong\u003e heating systems. This Expansion Vessel accommodates the expansion of water as it heats up, maintaining stable system pressure. properly functioning components are vital for the energy efficiency and safety of your boiler.\u003c\/p\u003e\n    \n    \u003cdiv style=\"background-color: #f8f9fa; padding: 15px; border-left: 4px solid #007bff; margin: 20px 0; font-family: sans-serif;\"\u003e\n        \u003cstrong\u003eℹ️ Product Condition Options:\u003c\/strong\u003e\u003cbr\u003e\n        This part may be available in \u003cem\u003eNew\u003c\/em\u003e, \u003cem\u003eRefurbished\u003c\/em\u003e, or \u003cem\u003eCompatible\u003c\/em\u003e conditions. Please select your desired option from the dropdown menu above. All refurbished parts are professionally tested to ensure reliability.\n    \u003c\/div\u003e\n\n    \u003ch2\u003eTechnical Insight \u0026amp; Common Failure Symptoms\u003c\/h2\u003e\n    \u003cp\u003eBased on service data: The expansion vessel inside the boiler is not working, it has a rubber diaphragm that may have failed, or the air it it needs re pressurising back to 3\/4-1 bar. Hi I am a Vaillant master technician. It sounds like the expansion vessel needs servicing or replacing. Let me know if I can help|Expansion\u003c\/p\u003e\n    \u003cp\u003e\u003cstrong\u003eReplacing this part often resolves the following issues:\u003c\/strong\u003e\u003c\/p\u003e\n    \u003cul\u003e\n        \u003cli\u003eRestores reliable system operation and eliminates fault codes.\u003c\/li\u003e\n        \u003cli\u003eResolves specific failure symptoms such as component malfunction.\u003c\/li\u003e\n        \u003cli\u003eEnsures safety compliance and efficient boiler performance.\u003c\/li\u003e\n    \u003c\/ul\u003e\n\n    \u003ch2\u003eCompatibility\u003c\/h2\u003e\n    \u003cp\u003eThis part (MPN: \u003cstrong\u003e2000801312\u003c\/strong\u003e) is designed for models within the \u003cstrong\u003eVaillant\u003c\/strong\u003e range. Please strictly verify the part number against your boiler's technical manual before ordering to guarantee fitment.\u003c\/p\u003e\n    \n    \u003cp style=\"font-size: 0.9em; color: #666; border-top: 1px solid #eee; padding-top: 10px;\"\u003e\u003cem\u003e\u003cstrong\u003eSafety Advice:\u003c\/strong\u003e Boiler parts involve gas, water, and electricity. Installation must be carried out by a Gas Safe registered engineer.\u003c\/em\u003e\u003c\/p\u003e\n    ","brand":"Vaillant","offers":[{"title":"Default Title","offer_id":41780778958951,"sku":"N8306","price":57.02,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0615\/0923\/8887\/files\/image340055757_6b3dc724-aacd-45b7-95bf-faca9ed07269.jpg?v=1774131323","url":"https:\/\/nationalboilerspares.co.uk\/products\/glowworm-expansion-vessel-with-prv-0020020744-was-801666-2000801312","provider":"National Boiler Spares","version":"1.0","type":"link"}