Smc Corporation

Kazuo Hiramatsu

Takashi Akimoto

Makoto Ishikawa

Masao Kajitani

A vacuum regulating valve has high controllability, wherein the opening of a valving member can be quickly and accurately controlled by using a small and inexpensive electric motor. In accordance with a signal indicative of a pressure set value and a pressure signal from the pressure sensor, the main controller in the valve control section outputs a signal for setting the opening of the valving member to a motor controller that controls the electric motor, and performs control to cause a pilot fluid to be supplied to a pressure receiving chamber of the piston, thereby causing the piston to move to the position of abutment with the stopper.

Vacuum regulating valve

For the purpose of obtaining a manifold for a change-over valve capable of corresponding with given situations easily and reliably even when some of piping directions of the change-over valves are different or piping directions are altered during an operation, port surfaces,are respectively formed on a front end surface and a bottom surface of a manifold,output openings,a,,b commonly in communication with output passages,a,,b are respectively formed on the port surfaces,and a port block,having output ports A, B in communication with the output openings,a,,b and a closing plate,for closing the output openings,a,,b are allowed to be selectively mounted.

Manifold for change-over valve

Solenoid-operated pilot valve

The present invention provides a terminal box that enables wirings for solenoid-operated valves mounted on manifolds to be achieved simply and safely without causing leads to be entangled or causing an open circuit. In a terminal box body 4 consisting of a box-shaped housing 6 and a cover 7 that can be mounted to or detached from the front surface of the housing, a terminal block 5 is accommodated so as to move forward and backward. The lower end of the cover 7 is connected to the terminal block 5 using connection shafts 29 in such a way that the cover 7 can rotate. When the cover 7 is opened by being brought down forward, the connection shafts 29 are used as supporting points, and the terminal block 5 can be moved into and out from the housing using the open cover 7.

Terminal box for manifold-mounted solenoid-operated valve

End plate for manifold for solenoid-operated directional control valve

A valve body of a main valve comprises a first and a second body portions, and grooves and shallow dents are formed in both body portions to form pilot fluid channels and a plug chamber in which a switching plug is accommodated. The switching plug that switches a directional control valve between the internal and external pilot types is accommodated in such a way that its axial direction can be changed by 180.degree..

Growing community of inventors

Ibaraki, Japan

Kazuo Hiramatsu