In addition to producing nitrogen pumping units, Stewart & Stevenson, in conjunction with Generon Systems, Inc., manufactures and supplies noncryogenic gaseous nitrogen production and pumping units. These units are both "pressure swing adsorption" and membrane technologies for traditional coiled tubing, cementing and fracturing applications, as well as nontraditional gaseous nitrogen flood applications in depleted oil reservoirs.

Membrane modules' air separation represents the latest technology in nitrogen equipment.

Adding Generon state-of-the-art PSA and membrane nitrogen separation technologies to Stewart & Stevenson's proven systems integration capabilities has led to the development of a range of noncryogenic nitrogen high- and low- pressure pumping units for use in oil field, purging and other industrial applications.

Skid-mounted membrane nitrogen unit for offshore

applications.