Abstract: A quick plugging set of pneumatic tools including a connector, a steel ball seat and a tailstock, wherein the steel ball seat and the ball head of the connector are integrated completely through stamping and covering by a friction ring coordinated with a holding groove with thin cladding at the outer end of the steel ball seat providing the connector with angle-adjustment feature; a prefabricated covering interpolation segment at the rear portion of the connector integrates with the tailstock, a corresponding ring groove is placed therein, and a bolt hole drilled on the side of the tailstock penetrating the ring groove; a pre-determined number of the steel balls are filled into the ring groove through the bolt hole to provide the connector with rotary movement thus allowing the quick plugging set of pneumatic tools to have arbitrary angle adjustment and flexible rotation.

Abstract: The present invention relates to a quick plugging set of pneumatic tools, which is composed of a connector, a steel ball seat and a tailstock, wherein the steel ball seat and the ball head of the connector complete integration through stamping and covering by a friction ring coordinated with a holding groove with thin cladding shape outer end of the steel ball seat, and provide the connector with angle adjustment feature; a prefabricated covering interpolation segment at the rear portion of the connector integrates with the tailstock, a relative ring groove is placed therein, and a bolt hole linking the ring groove is drilled at lateral portion of the tailstock for filling pre-determined number of the steel balls, so as to provide the connector with rotation performance, thus the quick plugging set of pneumatic tools with arbitrary angle adjustment and flexible rotation is made.

Abstract: An improved structure air compressor air (water) release valve, wherein the air (water) release valve is comprised of a valve stem, a valve seat, and a knob. The valve seat that enable fastening to the bottom portion of the air compressor storage tank. The major feature of the present invention is that the valve stem has a circular groove around its top extremity, the circular groove providing for the placement of an O-ring. As such, when the knob is rotated, the valve stem moves downward, and the O-ring on the valve stem is situated firmly against the valve seat beveled edge, thereafter constituting a tightly sealed state whereby gas leakage cannot occur in the air (water) release valve structure.