To connect pressure or vaccum lines to plain tubes & pipes. The coupling is simply pushed over the end of the tube & pressed firmly to the stop position. This provides an effective leak-proof sealing. The tube can be disconnected merely by pressing down the lever & pulling off the coupling. No welding, threading or flaring of tubes.
These tube couplings were developed primarily for production line use on refrigeration coil but they also have an overwhelming acceptance for compressor units heat exchangers. Infact any assembly which requires a quick, easy & efficient way to attach pressure and/ or vacuum lines to straight end tubings.
For pressure, vacuum line, connections to tubes and pipes used for refrigeration coils for charging refrigerant, refrigeration leak testing of plain tubes and tanks.