This product is mainly used for an oil cylinder circuit with a large area ratio of rodless cavity and rod cavity (ratio of reverse flow and forward direction flow), such as the circuit of stretching & withdrawing and variation amplitude oil cylinder on a hydraulic mobile crane.

Basic parameters:
1. Nominal diameter DN=20;
2. Rated working pressure PH=25MPa;
3. Reverse flow Qmax=350L/min;
4. Control pressure 5-8MPa.