Pressure adjustable retain valve, this valve allowed to set the pressure and guarantee the leak proof and back pressure for avoid accidental fall of load for gravitation.
The valve is combined between pilot operated check valve with pressure gap setting pressure.
The valve is produced in single and dual acting version, which are allowed to control just one direction or both direction in case of double acting.
This combined valve has inside connected the no return valve with maximum pilot pressure valve fitted in parallel.
In this way the valve enable the free flow in one direction through the unidirectional valve and control in the opposite direction, by opening the maximum pilot pressure valve
The maximum pressure cover also from peak pressure which will be reached during brusque brake and overturn direction.