Redi Controls, Inc.: portable service purge
The Service Purge™ is, according to the manufacturer, the fastest way to get air-logged, low-pressure centrifugal chillers back on-line. The unit features a 1/4 in.-hose hookup, is lightweight, and is compact for easy transport. It is designed for use with R-11, R-113, R-114, and R-123.
— Redi Controls, Inc.