serving as the direct OEM replacement for the obsolete TST30010

The sealing system utilizes a PTFE with Hypalon glass seal and braided PTFE with aramid stem packing

this part is cross-referenced as a direct substitute for the Sporlan C-307-S and the Alco EK-307-S series

Inspect for rusted burner ports

Lochinvar & A.O. Smith 100110715 Inlet Switch 322055-301 serving as the direct OEMThe Lochinvar & A. O. Smith 100110715 Inlet Switch is a critical safety component designed for high efficiency commercial and residential water heating systems. This OEM replacement part is the current updated version for the legacy 9005900215 and 193363 models. As a normally closed blocked inlet pressure switch, it monitors the air intake for obstructions. If the negative pressure at the combustion air inlet deviates from factory setpointsoften due