Consistent Performance: The pre-installed 1-3 PSI outlet spring ensures accurate calibration for equipment requiring higher-than-standard delivery pressures

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

and the reversible rotation capability allows for field flexibility when matching OEM airflow requirements

Designed specifically for Flammable Vapor (FV) resistant systems to meet modern safety standards

a vacuum breaker is likely required

Lochinvar & A.O. Smith 100171955 Gas Valve R-410A Consistent Performance: The pre-installed 1-3The 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