Patent attributes
In a control valve for use in both-hand operation provided with an AND valve (20) and a shuttle valve (21) connected to a main input ports (11a and 11b), a main switching valve (23) connected between the AND valve (20) and a main output port (12), and a tank (30) connected to an output port (21b) of the shuttle valve (21) through an aperture (26) in a valve body (10), valve holes of the AND valve (20), the shuttle valve (21), and the main switching valve (23) are pierced from an upper surface of the valve body (10), and a plate (33) for closing end portions of the valve holes and a cover (31) for forming the tank (30) are fixed in an airtight manner at the upper surface of the valve body (10), and continuous holes (33a and 33b) necessary for connecting the tank (30), the main switching valve (23), and the aperture (26) are pierced in the plate (33).
