York S1-025-41218-000 Gas Valve

The York S1-025-41218-000 Gas Valve is a critical OEM replacement part designed for high-performance gas-fired equipment. This single-stage gas valve operates on a 24V AC solenoid, providing a stable 3.5" WC manifold pressure for natural gas applications and 1.5" WC for low-pressure requirements when properly configured. Engineered for compatibility with specific York HVAC systems, such as model D1NQ042D09006A, this unit features 1/2" NPT inlet and outlet ports to ensure seamless integration into the fuel line. As a NG/LP convertible gas valve, it offers field flexibility for contractors working with different fuel types, provided the correct conversion orifices are utilized. The Honeywell VR8205 series crossover design ensures standard 1/4" quick-connect terminals and a compact footprint for streamlined installation. By maintaining precise manifold pressure, this direct ignition valve facilitates optimal combustion efficiency and consistent burner performance in both residential and light commercial settings.

• Dual Fuel Compatibility: Designed as a convertible gas valve for use with both natural gas and liquid propane systems.
• Precise Pressure Regulation: Factory set for 3.5" WC, ensuring consistent gas burner manifold pressure for maximum efficiency.
• OEM Engineering: A genuine York replacement part that meets exact factory specifications for the D1NQ042D09006A and related models.
• Contractor-Friendly Installation: Features standard 1/2-inch piping connections and 24V AC wiring terminals for fast, drop-in replacement.

Is this gas valve compatible with LP systems?
Yes, the York S1-025-41218-000 is convertible for liquid propane use. Technicians must use the appropriate conversion kit to adjust the manifold pressure and orifice sizing to factory standards.

Can I use this to replace a Honeywell VR8205?
This valve is often a direct OEM cross-reference for specific Honeywell VR8205 models used by York. Always verify the specific part number on the existing valve body before installation.

What are the voltage requirements for this unit?
This is a standard 24V gas valve. It requires a 24VAC transformer and is compatible with most modern integrated furnace controls and thermostats.

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.