Always verify the HVAC part number against the model's data plate before installation

a vacuum breaker is likely required

This part is a specific OEM replacement for York and associated brands

Durable Construction: Fabricated from high-grade materials to withstand constant thermal cycling and exposure to flue gas condensates

Lochinvar & A.O. Smith 100171955 Gas Valve R-410A Always verify the HVAC partThe Lochinvar & A. O. Smith 100171955 Gas Valve is a critical replacement component engineered for high efficiency commercial and residential water heating systems. As a genuine OEM gas valve, this part ensures precise fuel to air ratios and consistent manifold pressure, which are vital for maintaining the thermal efficiency of condensing boilers and high recovery water heaters. Built for professional grade reliability, the 100171955 is a direct drop