physical dimensions or mounting holes may vary on earlier legacy models

Integrated Check Valve: Simplifies installation in heat pump systems by allowing bypass flow without additional piping

Steam-Rated Durability: Includes specialized elastomers and gaskets capable of withholding elevated temperatures in steam and hot water lines

two-wire design ensures accurate response to system demand signals

Lochinvar & A.O. Smith 100191089 Tubing 322055-301 physical dimensions or mounting holesThe Lochinvar & A. O. Smith 100191089 Tubing is a critical OEM replacement part engineered for natural gas pilot assemblies in high efficiency commercial and residential gas fired boilers and water heaters. As a veteran technician, you know that maintaining precise gas flow to the pilot burner is non negotiable for reliable ignition and consistent flame rectification. This NAT PILOT TUBING kit is specifically designed to facilitate the steady chemical