Abstract: A regulator for pneumatic system comprising a connecting bracket for connecting other air conditioning units to a regulator body. Because of this connecting bracket, the air conditioning units to be connected to each other can be modularized. The connecting bracket has, at its both ends, a pair of projection-like pawl sections which are engageable respectively with engaging sections formed respectively on outer peripheral surfaces of the other air conditioning units. Incorporated in the connecting bracket is a pressure gage for detecting secondary pneumatic pressure within the regulator body. The pressure gage comprises a pressure detecting section, a pressure display section, pressure setting section and an abnormality alarm section.

Abstract: A solenoid valve having a movable member being moved by an electromagnetic attraction of a solenoid section in a valve chest between the solenoid section. A valve seat opposed thereto and a valve body provided an the movable member is abutted against or separated from the valve seat to close or open a valve port or ports. The movable member is supported in the valve chest through a support member or members for regulating a displacement of the movable member in a direction perpendicular to the moving direction of the movable member. The valve body may be fixed to or movable from the movable member. The movable member is formed with a through-hole for receiving the valve body, which extends in the moving direction thereof. The valve body, formed of an elastic material, is disposed in the through-hole and a surface of the valve body, which is opposed to the solenoid section forms a surface of the movable member, which is abutted against the solenoid section.

Abstract: A double acting cylinder actuated by air pressure having inner and outer double-wall cylinder tubes. A plurality of pairs of air pressure feed-exhaust ports of the cylinder tubes of this double acting cylinder are concentratedly provided as a pair on the outer periphery at one or opposite ends, or on an end face of the cylinder, respectively. Air communication passages for communicating a pair of feed-exhaust ports with first and second spaces of a cylinder bore can be easily changed by reversing the outer or inner cylinder tube in the axial position thereof. In this case, seal rings are changed in position as necessary, unused feed-exhaust ports are blocked by seal plugs, and only one pair of feed-exhaust ports, which are necessary are connected thereto with air pressure pipings.