This OEM replacement part (also referenced as LF18-094) ensures 100% compatibility with specific residential and commercial models

With a ±1% FS accuracy rating

The McDonnell & Miller 334100

Key Benefits 1-1/4" NPT high-flow capacity designed for large commercial Raypak heating units

such as the TS394 sensor and M/MR series valves

Lochinvar & A.O. Smith 100276822 Cutoff 319852-301 This OEM replacement part (alsoThe Lochinvar & A. O. Smith 100276822 Cutoff is a critical safety component designed for high efficiency hydronic systems, including the Lochinvar FT series and AQUAS Low NOx pool heaters. This low water cutoff utilizes a sophisticated electronic probe to monitor boiler water levels in real time, providing an essential defense against dry firing. Operating on a 24V circuit, the 100276822 features a dual auto manual reset configuration, allowing