Duff Norton 440146C Rotary Union 1-1/2" NPT Carbon Steel

The Duff Norton 440146C Rotary Union is a mechanical sealing component designed to transfer fluid between stationary and rotating sections through a 1-1/2" NPT connection interface constructed from carbon steel. It operates using internal sealing elements that maintain a controlled passage for fluid flow while allowing continuous rotation of the connected shaft assembly. In HVAC system applications, it is used within rotating equipment assemblies, heat exchange setups, and fluid transfer arrangements where movement between fixed piping and rotating parts is required. It is mounted at the rotating joint section to maintain sealed transfer continuity and support stable operation during continuous motion.