The Rheem-Ruud 83-104499-11 Charge Compensator ODF 7/8" x 3/8" is a precision HVAC refrigeration component designed to help regulate refrigerant flow and maintain proper system charge for optimal performance. Commonly used in compatible Rheem and Ruud air conditioners, heat pumps, and refrigeration systems, it works by compensating for refrigerant pressure variations to support effici... https://www.partshnc.com/78x38odf-charge-compensator