A METHOD OF OPERATING A REFRIGERATION SYSTEM AND A CONTROL VALVE

摘要

A control valve (17) comprises a valve housing (40) defining a valve seat (20) together with a valve cone (22) guided to be movable whereby to control passage of fluid from the valve inlet to the valve outlet. A valve piston (23) may force the valve cone toward sealing engagement with the valve seat. The valve cone is displaceable relative to the valve piston. The control valve may be used in a compressor driven refrigeration system as a check valve in the oil separator discharge line, an advantage being that it controls the pressure, checks any backflow, and leaves normal flow unthrottled.