Cetop 3 - Counterbalance Module - AM3.CB.AB.C3.001
The basic function of a counterbalance valve is to control a load, by providing a restriction through a differential area.
They also help prevent cavitation when controlling an overrunning load.
Load control is achieved when enough pressure is present at the work port to overcome the spring setting.
The most popular pressure ratio is 3:1 often used in position critical applications.