Millivolt Gas Valve NG Replacement for Quadrafire 040-500 – NBK-20983

Millivolt Gas Valve – Natural Gas – NBK-20983 The NBK-20983 Millivolt Gas Valve (Natural Gas) is a direct replacement for Quadrafire 040-500 and a wide range of compatible fireplace and hearth systems. This valve provides dependable millivolt gas control for standing pilot applications. Designed for natural gas (NG) systems, this valve supports safe ignition, flame stability, and consistent heating performance in fireplaces, gas stoves, and hearth appliances. Key Features Millivolt Operation: Designed for standing pilot systems Natural Gas (NG): Compatible with NG fuel type Direct Replacement: Replaces Quadrafire 040-500 Multi-Brand Compatibility: Works with numerous fireplace manufacturers Reliable Gas Control: Ensures stable burner and pilot performance Specifications SKU: 20983 Category: Hearth Parts, Gas Valve Fuel Type: Natural Gas (NG) Valve Type: Millivolt Replaces OEM: 040-500 Direct Replacement For Quadrafire: 040-500 Avalon / Travis Industries: 05-02-00181, 05-02-00238, 250-02665 Continental: W725-0036 Heatilator: 040-500 HPC Fire: 200-K IHP / Ironstrike / Lennox: H5937 Majestic / Majco / Insta-Flame: 51833, 52779 Mendota: 05-02-00181, 05-02-00238 Monessen / Lexington Forge / Vermont Castings: 52779 Montigo: RGC1044R Napoleon: W725-0036, WS-725-036 Lopi / Fireplace Xtrordinair: 05-02-00181, 05-02-00238 Why Choose NBK-20983? The NBK-20983 Millivolt Gas Valve offers a dependable replacement solution for restoring proper gas flow and ignition performance in natural gas fireplaces and stoves. It is engineered to meet OEM compatibility standards across multiple major hearth brands. Installation Tips Turn off gas supply and disconnect power before installation. Confirm fuel type (Natural Gas) before installing. Use approved thread sealant for gas fittings. Check all connections for leaks after installation. Professional installation is strongly recommended for gas components. Pairs Well With Thermocouples, Pilot Assemblies, Igniters, Gas Valve Wiring Harnesses, Fireplace Gasket Kits SPECIAL ORDER NOTICE: This item is sourced through our special order program. Please allow 1–2 business days for processing prior to shipment.