WMM670 Directional Valve with manual actuation
Components Series 70
Max.operating pressure is 35MPa.
Max.Flow:60L/min
Hand knob position:
No sign means Hand knob front and back operation
LR means Hand knob left or right operation
Dampers:
Unmarked means without damper
B08 with damper, orifice diameter is 0.8mm
B10 with damper,orifice diameter is 1.0mm
B12 with damper, orifice diameter is 1.2mm
The valves with spring reset and detent function
For details, see function symbols
Weight is about 1.62kgs
Hydraulic directional valves related article – Operation of solenoid valve
Hydraulic directional valves pilot oil control valve spool movement, so that the working pump oil into the arm cylinder to raise the arm. The greater pilot relief valve output pressure is,the greater the displacement of the control hydraulic directional valves spool,the larger flow through main valve, the faster arm rises. When the handle is pulled to the limit position, the limit electromagnetic iron in the handle is connected with the electric power, and the handle is pulled in the limit position. The arm rises with the maximum speed,when up to the position is limited by the position limit switch, operate the handle to turn the electromagnet off, the handle automatically returns to the middle position, and the movable arm can be kept in a defined position. In the process of rising arm, if you need to move the arm to stay in a position, you need to return the operating handle to the middle position.