QF28 full load feedback multiple directional control valve

The model QF28 full load feedback multiple directional control valve is the latest product developed by our company by making full use of the operating principle and technical parameters of the most advanced full hydraulic crane systems. It has filled the demand by model QY50, QY60 and QY80 full hydraulic cranes. Its high quality full loading feedback function improves the controlling accuracy of cranes and minimize energy loss, which may be referred to as best energysaving product with high accuracy control. The model QF28 full load feedback multiple directional control valve has met the demand in the domestic crane industry, which will be widely applied in crane, engineering and mining machinery.

Model QF28 full load feedback multiple directional control valve has the following features:

1.        Full load feedback
All working ports can provide correspondent flow as required by the actuating mechanism of the main machine and ensure that their wording speed will not be affected by load change. It also has fine inching characteristics.
2. High efficiency and energy saving
If the valve fed by loading feedback pump, its center position has almost no pressure loss. The system will in ready state with low pressure. In the case of direction changing, the flow provided by the oil source is only enough for the actuating mechanism.
3. Interference free
When the valve is carrying out complex moves, the action speed of individual actuating mechanism will not affect each other.
4. Variety operating modes
With manual, hydraulic proportional control and eletrohydraulic propertional control.