Video (training): metering devices basics part 2

Video (training): Metering Devices BASICS PART 2

Metering devices separate high and low side pressures over refrigeration and air conditioning systems by adding restriction to the system. They meter liquid refrigerant from the liquid line to the evaporator, and some metering devices meter refrigerant superheat and pressure in evaporator. The most common types of metering devices are capillary tubes, thermostatic expansion valves and automatic expansion valves. This part of video explains capillary tubes.