QUICK CONNECT AND DISCONNECT VALVED COUPLING

摘要

A pneumatic valve for quick connection and quick disconnection from pneumatic tools and the like. A normally closed valve having a movable valve member, including a valve stem, is disposed in a valve housing. An inlet bushing is screwed into a tapped opening provided therefor in the pneumatic tool and in which a connector nut, rotatably disposed on the valve body, is quickly screwed into and out of the inlet bushing, which has a web thereon engagable by the valve stem of the movable valve member for moving the valve member to the open position when the connector nut is screwed into the inlet bushing. An O-ring is located in a groove in the inlet bushing and provides an effective pneumatic seal between the connector nut and the inlet bushing when the nut is screwed into the connector. The inlet bushing normally is attached to the pneumatic tool and the valve body, with the valve member operably disposed therein, is easily and quickly disconnected from the inlet bushing and, hence, from the pneumatic tool by unscrewing the connector nut from the inlet bushing, the valve automatically closing when the valve is disconnected from the inlet bushing. The valve body with its valve member is as easily and quickly attached to the tool by screwing the connector nut into the inlet bushing, the valve then being automatically opened.