Mechanical control valve

The mechanical valve normally controls the change of direction by the external mechanical force.When the external mechanical force disappears,the valve will automatically reset and change direction.Its knob type and push block type structure has memory function.It has two kinds of two-positon&three-port and two –positon?&five-port in function.The two-position&three-port calce is used for control of signal output in pneumatic system,while the two-position&five-port vakve van directly drive air cylinder.