A restrictive tube used in a refrigeration system which restricts the flow of freon and allows pressure to build on one side and suction on the other. It is located between the condenser and the evaporator. ( 020)

Usually connected to an expansion valve or thermostatic switch; a hollow tube filled with a refrigerant to gauge or measure a remote temperature. The changes in temperature cause the refrigerant to expand or contract. That helps regulate or operate the valve or switch.

a tube of small internal diameter; holds liquid by capillary action