{"product_id":"potterton-baxi-gas-valve-vk4105c1009-402552","title":"POTTERTON BAXI GAS VALVE VK4105C1009 402552","description":"\u003ch1\u003e\u003cspan\u003ePotterton Baxi Gas Valve VK4105C1009 402552\u003c\/span\u003e\u003c\/h1\u003e\n\u003ch2\u003e\u003cspan\u003eProduct Overview\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ePotterton Baxi Gas Valve (Part Numbers: VK4105C1009 and 402552)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is a gas-control component designed for use in selected \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ePotterton boiler systems\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, including the Suprima range.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eManufactured to the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eHoneywell VK4105C1009\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e specification, this component forms part of the boiler's combustion system, controlling and regulating the supply of gas to the burner in response to signals from the appliance's electronic control system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe valve incorporates an \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eautomatic safety shut-off mechanism and servo pressure regulation\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, supporting controlled gas delivery during ignition and burner operation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIts regulating mechanism helps maintain appropriate gas pressure conditions, while the electrically operated safety valve controls gas flow according to the boiler's operating requirements.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCorrect operation is essential for maintaining stable burner performance, appropriate gas supply conditions and safe, reliable combustion.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eℹ️ Product Condition Options:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis part may be available in \u003c\/span\u003e\u003cem\u003e\u003cspan\u003eNew\u003c\/span\u003e\u003c\/em\u003e\u003cspan\u003e or \u003c\/span\u003e\u003cem\u003e\u003cspan\u003eRefurbished\u003c\/span\u003e\u003c\/em\u003e\u003cspan\u003e condition. Please select your desired option from the dropdown menu above. Refurbished gas valves should be professionally inspected and tested to confirm their condition, correct operation and suitability for installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eTechnical Insight \u0026amp; Common Failure Symptoms\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eHoneywell VK4105C1009 Gas Valve\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is an electrically operated gas-control component incorporating \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eservo pressure regulation and automatic safety shut-off functions\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. It works alongside the boiler's printed circuit board (PCB), ignition system and flame supervision controls to manage gas delivery during burner operation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eElectrical faults, internal mechanical deterioration, damaged valve connections or problems affecting the pressure-regulating mechanism may interfere with normal gas flow, ignition performance or burner stability.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePossible symptoms that may indicate a faulty gas valve or associated combustion control problem include:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eBoiler failing to ignite despite receiving a heating demand.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eBurner failing to establish or maintain a stable flame.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eRepeated ignition attempts or unsuccessful burner start-up.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eIntermittent burner operation or unexpected shutdowns.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eBoiler entering an ignition-related safety lockout.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eGas valve failing to respond correctly to electronic control signals.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eIncorrect gas pressure or regulation identified during professional testing.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eAbnormal combustion performance detected during servicing.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eVisible damage, corrosion or deterioration affecting the valve or its electrical connections.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eThese symptoms do \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003enot necessarily confirm a faulty gas valve\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, as similar problems may result from the gas supply, ignition components, wiring, PCB, flame detection equipment or other combustion controls. Correct professional diagnosis should be carried out before replacing the component.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eSafety Advice\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003e\u003cspan\u003eBoiler gas valves are safety-critical components within gas-fired heating appliances. Inspection, removal, installation and adjustment must only be carried out by a \u003c\/span\u003e\u003c\/em\u003e\u003cstrong\u003e\u003cem\u003e\u003cspan\u003eGas Safe registered engineer\u003c\/span\u003e\u003c\/em\u003e\u003c\/strong\u003e\u003cem\u003e\u003cspan\u003e who is suitably qualified for the appliance and work being undertaken.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cspan\u003eAlways isolate the appliance's gas and electrical supplies before carrying out any work and follow the manufacturer's installation and servicing instructions.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cspan\u003eEnsure the correct \u003c\/span\u003e\u003c\/em\u003e\u003cstrong\u003e\u003cem\u003e\u003cspan\u003egas valve model, part number, gas type and pressure-regulation requirements\u003c\/span\u003e\u003c\/em\u003e\u003c\/strong\u003e\u003cem\u003e\u003cspan\u003e are verified before installation. Gas valves with similar appearances may have different operating characteristics or specifications.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cspan\u003eNever attempt to modify, bypass or adjust gas valve safety mechanisms outside the manufacturer's specified procedures.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cspan\u003eAppropriate gas-tightness testing, gas supply pressure checks, ignition testing, combustion analysis and operational safety checks must be completed before returning the boiler to service.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cspan\u003eIf a gas leak is suspected, do not operate the appliance and follow the appropriate gas emergency procedures.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"Potterton","offers":[{"title":"New Other","offer_id":51596326994023,"sku":"N7597","price":179.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0615\/0923\/8887\/files\/edited-photo-2026-11-13T102905.563.jpg?v=1794566138","url":"https:\/\/nationalboilerspares.co.uk\/products\/potterton-baxi-gas-valve-vk4105c1009-402552","provider":"National Boiler Spares","version":"1.0","type":"link"}