The capillary tube has been used as a refrigerant metering device for many decades. Many HVACR manufacturers are still successfully employing capillary tube metering devices in their latest equipment.

As energy costs and regulatory demands for system efficiency increase, thermostatic expansion valves (TXVs) are replacing capillary tubes, particularly in residential air conditioning and heat pumps.

How can the Vapochill LS unit get so darn cold?! In essence, there are four key mechanisms on the go in a phase change system. These parts are connected in a closed loop by tubing, this loop is filled ...