The First Company CP81-59 0.059-inch Orifice Piston is a refrigerant metering component designed for compatible HVAC systems. It regulates the flow of liquid refrigerant into the evaporator by creating a controlled pressure drop, helping maintain proper refrigerant distribution during operation. Commonly used in air conditioners, heat pumps, and evaporator coil assemblies, this orific... https://www.partshnc.com/first-company-cp81-59-orifice-piston-059