This valve group is extensively applied to small excavators. With reliable performance, it can provide hydraulic energy distribution to all actions of a small excavator and realize joint operation and speed control on single and several actions.

Basic parameters:
1. Rated working pressure: PH=35MPa;
2. Flow and amount at oil inlet: 70L/min×3;
3. Control mode: external (electro) hydraulic proportional control; hydraulic control pressure 0.6～3.0MPa;
4. Mode of control on the movement of actuating mechanism: direction; stepless speed regulation; micro motion; and combined movement of several actuating mechanisms;
5. Internal relief requirement: swing arm B port 3ml/min; other <2～12ml/min (7.0MPa).