Air Products and Chemicals, Inc.

Bennett, Douglas L.

Zabrenski, John S.

Patrylak, Andrew J.

Ludwig, Keith A.

John S Zabrenski

Douglas L Bennett

Keith Alan Ludwig

Andrew J Patrylak

A gas pressure regulator including a housing having a high pressure chamber into which the gas to be regulated is fed, a low pressure chamber, and an orifice between the high pressure chamber and the low pressure chamber. A bonnet is mounted on the housing across the low pressure chamber. A flexible diaphragm is mounted across the low pressure chamber and separates the low pressure chamber from the bonnet. A rod extends through the orifice and connects the flexible diaphragm to a valve plug in the high pressure chamber so that movement of the flexible diaphragm moves the valve plug toward and away from the orifice. A rigid piston is slidable mounted in the bonnet. A spacer connects the flexible diaphragm and the rigid piston in spaced relation to provide a chamber therebetween. An adjustment stem having a knob on its end is threaded through the bonnet and a spring is compressed between the adjustment stem and the piston. A pressure sensor is mounted on the bonnet at the chamber between the flexible diaphragm and the rigid piston to indicate any change in pressure in the chamber as a result of leakage across the flexible diaphragm.

Piston-backed gas pressure regulator

This invention relates to a process for the cryogenic separation of oxygen-containing mixtures to produce an enriched product whereby oxygen concentrations greater than 21% by volume are achieved in the process via passing streams of liquid and vapor countercurrently through a mass transfer zone which contains packing elements fabricated from a material having a thickness of less than about 1 millimeter, having a copper concentration of at least about 30% by weight and a heat of combustion of less than 1.0 Kcal/g, thereby avoiding the risk of flammability.

Suitable distillation column packing for the cryogenic separation of air

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Allentown, PA, United States of America

John S Zabrenski