Direct Cross-Reference: 100170652 is functionally identical to TST3403

this shell is specifically designed to facilitate replaceable core or filter cartridge installation

Can I use this for both AC and DC monitoring

the "/U" suffix simply denotes "Universal" packaging for retail or wholesale distribution

Lochinvar & A.O. Smith 100109300 Burner 321702-401 Direct Cross-Reference: 100170652 is functionallyThe Lochinvar & A. O. Smith 100109300 Burner is a critical LP FV Burner Assembly engineered specifically for propane fired water heaters requiring Flammable Vapor (FV) ignition resistance. This OEM replacement part serves as the final burner assembly and comes factory equipped with a precise #50 orifice to ensure the exact BTU input and gas flow regulation necessary for optimal combustion. Designed to restore high efficiency performance in compatible