{"product_id":"viessmann-7134747-gas-valve","title":"Viessmann 7134747 Gas Valve","description":"\u003cp\u003eThe \u003cstrong\u003eViessmann 7134747 Gas Valve\u003c\/strong\u003e is a critical combustion control component engineered for high-efficiency \u003cstrong\u003eVitodens 200 WB2 and WB2A series boilers\u003c\/strong\u003e. This \u003cstrong\u003eOEM replacement gas valve\u003c\/strong\u003e is a \u003cstrong\u003e20V\u003c\/strong\u003e, normally closed (NC) two-way solenoid valve designed to regulate the flow of \u003cstrong\u003enatural gas or liquid propane\u003c\/strong\u003e to the burner assembly. Identified by the \u003cstrong\u003eR10\u003c\/strong\u003e designation, this valve features a precise \u003cstrong\u003e10-ohm internal resistance\u003c\/strong\u003e, ensuring exact signal communication with the boiler control logic for stable modulation. As a \u003cstrong\u003egas valve without orifice\u003c\/strong\u003e, this unit requires the technician to transfer the existing fixed orifice or utilize a specific conversion kit to match the appliance's firing rate and fuel type. Professionals servicing \u003cstrong\u003eVitodens 200-W\u003c\/strong\u003e models rely on this valve for its consistent manifold pressure regulation and durable solenoid construction. Integrating this \u003cstrong\u003egenuine Viessmann part\u003c\/strong\u003e restores the precision of the combustion air-gas ratio, maintaining optimal AFUE ratings and operational safety in \u003cstrong\u003ehydronic heating systems\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cstrong\u003eKey Benefits\u003c\/strong\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDirect OEM Compatibility:\u003c\/strong\u003e Specifically calibrated for \u003cstrong\u003eViessmann Vitodens 200 WB2\/WB2A\u003c\/strong\u003e boiler series.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecise Electrical Response:\u003c\/strong\u003e The \u003cstrong\u003eR10 (10-ohm)\u003c\/strong\u003e internal resistance provides accurate \u003cstrong\u003e20V\u003c\/strong\u003e signal processing for reliable opening and closing cycles.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Fuel Support:\u003c\/strong\u003e Suitable for both \u003cstrong\u003eNatural Gas\u003c\/strong\u003e and \u003cstrong\u003eLiquid Propane (LPG)\u003c\/strong\u003e configurations when used with the appropriate orifice.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized Combustion:\u003c\/strong\u003e Helps maintain steady gas flow to the burner, reducing CO emissions and preventing modulation errors.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDoes this gas valve include the orifice?\u003c\/strong\u003e No, the \u003cstrong\u003eViessmann 7134747\u003c\/strong\u003e is supplied \u003cstrong\u003ewithout the orifice\u003c\/strong\u003e. You must swap the orifice from the failed valve or install a new one from a fuel conversion kit.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhich boiler models use this valve?\u003c\/strong\u003e It is designed for the \u003cstrong\u003eVitodens 200\u003c\/strong\u003e series, including \u003cstrong\u003eWB2\u003c\/strong\u003e and \u003cstrong\u003eWB2A\u003c\/strong\u003e variants (6-24, 8-32, 11-44, and 15-60).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCan I use this for a 120V system?\u003c\/strong\u003e No, this is a \u003cstrong\u003e20V\u003c\/strong\u003e low-voltage component. Verify your control board output before installation to prevent electrical damage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong style=\"color: red;\"\u003eThis item is not eligible for free shipping.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDisclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.\u003c\/p\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":42448615047346,"sku":"7134747","price":582.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/products\/Pic_b7c4215b-57f7-4264-b440-7c2958d70b8a.jpg?v=1752267149","url":"https:\/\/www.gsistore.com\/products\/viessmann-7134747-gas-valve","provider":"GSIstore","version":"1.0","type":"link"}