Control Devices, Incorporated

Paul F Ross, Ii

Michael J Purvis

Joseph L Krechel

A valve for controlling flow of air from a source of air under pressure such as a compressed air tank comprising an elongate body with first and second ends and first and second sides lying opposite one another. A transverse opening, extending between the first and second sides of the body adjacent its first end, has five coaxial sections of circular cross section having various diameters. The valve further includes a valve stem having a head with a pair of annular grooves in it, each holding an O-ring. The O-ring closest to the inner end of the head is engageable with a valve seat provided in of the transverse opening on inward movement of the stem to close the valve. A knob is attached to the valve stem to facilitate moving the stem. The valve stem with the O-rings in the grooves but without the knob is capable of assembly by inserting the stem into the opening from one side of the body.

Valve

A manifold fitting for a compressed air tank having an elongate main body of hexagonal cross-section with first and second ends, the first end being of reduced circular cross-section, the body having an axial passage extending from the first end toward and terminating short of the second end. The first end is externally threaded for attachment of the fitting to a tank for communication with the tank via the passage. The body has a lateral opening extending inwardly from a one of its six faces to said passage and a pressure relief safety valve at the lateral opening in the body. A passage extends across the body and intersects the lateral opening.

Manifold fitting for a compressed air tank

A manifold fitting for a compressed air tank comprising an elongate main body of hexagonal cross-section having an axial passage for communication with the tank, a first lateral opening extending from a first face of the body, an outlet member threaded in the first lateral opening having a valve seat at its inner end and a second lateral opening extending from a second face opposite the first. A valve member is threaded in the second lateral opening extending across the stem with an axial passage therein extending inwardly partway from its outer end to at least one port in the valve stem for communication with the axial passage. A filler check valve is located in the axial passage for filling the tank with compressed air via application of a coupling at the end of a compressed air supply to said stem. A third lateral opening extends inwardly from a third face to said passage and has a pressure relief safety valve therein. A fourth threaded lateral opening in the body extends inwardly from a fourth of the faces to the passage for receiving a pressure gauge.

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St. Louis, MO, United States of America

Paul F Ross, Ii