Duff Norton 750089C Rotary Union 3/4" NPT Stainless Steel

The Duff Norton 750089C Rotary Union is a stainless steel component used in related thermal transfer equipment to enable continuous fluid or air passage between stationary and rotating sections. The connection size, 3/4" NPT, refers to a standard tapered threaded fitting used for secure sealing in piping systems carrying water, steam, oil, or compressed air within HVAC systems. It is integrated into rotating heat exchangers, air handling assemblies and industrial processing equipment where uninterrupted transfer is required during rotation. The unit maintains sealed flow paths while supporting rotational movement, assisting in preserving system pressure stability, and operational continuity in heating and cooling applications.