Description
The First Company CP81-51 Orifice Piston is a refrigerant metering part that is used to control the refrigerant flow in cooling units. The refrigerant is forced through a 0.051-inch calibrated orifice opening, which forms a controlled restriction to the flow of refrigerant into the evaporator coil utilized in the HVAC systems. The piston-style insert is installed in the distributor or metering body of the refrigerant circuit to create a fixed passage that regulates the flow of refrigerant in the system. It is located in the liquid line or evaporator inlet assembly, and it regulates the refrigerant flow when cooling is in progress.
