a thin copper tube of predetermined length into which the compressed liquid refrigerant is pumped
a very small diameter copper tube that serves to create a restriction in the loop
a small-diameter tube (metering device), whose bore and length are designed to permit the passage of a specific amount of liquid refrigerant or other liquid at a specific pressure drop
A long, narrow tube used to transmit internal gas pressure from a remote sensing bulb to a thermostatic expansion valve diaphragm.
A fixed-bore metering device. This is a small diameter tube that can vary in length from a few inches to several feet. The amount of refrigerant flow needed is predetermined and the length and diameter of the capillary tube is sized accordingly.
A tube sufficiently fine that capillary action is significant.
A metering device used to control the flow of refrigerant in a sealed system. It usually consists of several feet of tubing with a small inside diameter.
A small tube factory-placed into the air spacer of an insulating unit used for balancing interior and exterior pressures during transportation over higher elevations, i.e. mountain ranges or air transport.