Lochinvar & A.O. Smith 100173792 Arm Assembly 321894-709 With its threaded barrel design

With its threaded barrel design and secure setscrew mounting

which helps prevent ground loops and isolates communication failures to a specific segment of the trunk

While many SmartValve bodies can be converted

including the gas valve

Complete Replacement Solution: This 100145007 kit acts as a seamless drop-in for worn combustion blowers

Lochinvar & A.O. Smith 100173792 Arm Assembly 321894-709 With its threaded barrel designThe Lochinvar & A. O. Smith 100173792 Arm Assembly is a critical OEM component designed for high efficiency burner management in commercial and residential gas fired systems. Engineered for precision and thermal stability, this gas air arm assembly ensures the correct orientation and alignment of the burner interface, which is essential for maintaining stoichiometric combustion and maximizing heat transfer. Built to withstand the harsh operating