Description
The Supco BC4 Capillary Tube is a precision metering equipment used for refrigerant flow control. It consists of a fixed-length copper tube with a 0.064-inch internal diameter and 12-foot length, designed to create a controlled pressure drop in refrigeration and air-conditioning circuits in HVAC systems. It is installed in evaporator and expansion line assemblies, where it regulates refrigerant feed into the cooling coil. It operates as a fixed expansion, ensuring stable cooling performance during operation, servicing, and replacement of refrigeration system components.
