The Williams 8934 Natural to LP conversion kit is a field-proven assembly designed to transition select gas-fired heating units from natural gas to liquid propane. This kit is built specifically for HVAC professionals working with the Williams 6003 gas valve, which is standard on many post-2002 monterey top vent and console heaters. As a veteran-grade solution, it ensures the manifold and burner pressures align with propane’s higher BTU density, moving the manifold pressure to approximately 10.3” w.c. to maintain safe combustion parameters. Installation requires precise mechanical integration. This furnace gas conversion package includes high-tolerance orifice spuds and a dedicated pressure regulator spring to modify the supply flow. This kit is incompatible with Robertshaw valves or vent-free models. For contractors and technicians, using the Williams 8934 conversion kit is the only approved method to alter the fuel source of these 65,000 BTU systems without compromising the integrity of the heat exchanger or burner assembly. Key Benefits Precise Pressure Calibration: Specifically engineered to bring manifold pressure to the required 10.3” w.c. for liquid propane. OEM Compatibility: Designed exclusively for the Williams valve part number 6003, ensuring secure fitment and reliable throughput. Enhanced Safety Signaling: Includes mandatory conversion labels to ensure future service technicians are aware of the fuel transition. Direct Hardware Replacement: Features high-quality burner orifices and regulator gaskets to prevent gas leaks during high-pressure operation. Common Questions Can I use the Williams 8934 kit on a Robertshaw gas valve? No. This kit is strictly manufactured for use with the Williams 6003 gas valve. Attempting installation on other valve brands like Robertshaw is hazardous and will result in improper combustion. Is this kit compatible with Monterey top vent furnaces? Yes, the 8934 is a standard LP gas conversion kit for several high-capacity Williams furnaces, including the 65,000 BTU Monterey series, provided they utilize the 6003 valve. What is the required inlet pressure for this conversion? For stable operation, the minimum inlet gas supply pressure should be 11.0” w.c., with a maximum not exceeding 13.0” w.c. as measured by a manometer. This item is not eligible for free shipping. Disclaimer: 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.
