Nordyne 664077R 0.077" Restrictor Orifice #77

The Nordyne 664077R Restrictor Orifice controls flow movement by creating a fixed passage within the equipment assembly. This component manages the amount of fluid or gas allowed through the system to support proper operating requirements. It operates through a calibrated opening with a 0.077 orifice size and #77 rating to provide the needed flow restriction between connected sections. The part is installed in compatible equipment and HVAC systems during service or replacement work. It helps maintain controlled flow delivery and supports the required function of system components.