The capillary tube — the simplest of refrigerant controls — is the most popular method for metering refrigerant flow from the condenser to the evaporator in compression-type refrigeration systems.

Capillary tubes are generally used as the metering device on small, fractional-horsepower refrigeration systems. Charging these systems with refrigerant requires a different procedure than those ...

Nancy Dubrowny, MS, MT(ASCP)SC, BD Preanalytical Systems, and chairholder of the subcommittee that developed the guideline, says, "One benefit of this document is that it provides a recommendation for ...