Overhung Centrifugal Compressors D Series Single-Stage
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Overhung Centrifugal

D Series Single-Stage Compressors Overhung, single-stage centrifugal compressors are designed for lower pressure, high volume applications, including mechanical vapor recompression, sulfuric acid plants, chlorine, combustion air, process gas boosters and many more. With different combinations of materials, seal designs, and impeller configurations, D Series compressors are capable of handling a wide range of gases and processes. Packages can be tailored to meet specific customer specifications as well as API and other industry standards. A long history of innovation and service Technology...

1 Heavy-duty casings • Cast iron standard, other materials available depending on application • Low point drain on all casings 5 5 2 Inlet nozzles • Removable • Cast iron standard, other materials available depending on application 3 Optional inlet guide vanes • Creates infinite array of performance characteristics • Maximizes efficiency in variable operating conditions • Power savings of up to 15% possible • Increases turndown, broadening operating range • Pneumatic, electric or manual operators • Variety of housing materials to suit customer needs • Standard vanes made of 316 stainless...

Single-stage compressor details Frame sizes • Backplate support: D8 to D36 • Centerline support: D42 to D72 Impeller options • 12-78” diameter • One-piece milled impeller, forged hub/welded blades or cast impeller • Material options - AISI 4140 alloy steel - 410 stainless steel (to 1,000 fps) - 17-4 stainless steel (to 1,400 fps) - Milled titanium (above 1,400 fps) - Other materials available for specific applications • Speeds: 2,000 to 20,000 rpm Shaft • Single-piece bar stock or forging • Integral thrust collar • Tapered impeller fit, no key required or hydraulic removal, if specified •...

Support systems manufactured to meet specific requirements Bearing packages Because each system’s operation depends upon unique requirements, GE offers a variety of factory assembled accessory packages. To ensure reliable service, pivoted-shoe radial bearings and tilt-pad, double-acting thrust bearings are used exclusively on all heavy-duty, single-stage centrifugal compressors. The oil-flooded radial bearings feature five pivoted-shoe pads, equally spaced around the base of a horizontally split bearing body. Each shoe is self-aligning to compensate for shaft angularity. A separate oil...

Comprehensive testing Every single-stage centrifugal compressor we manufacture must pass stringent testing and inspection procedures. Each component is thoroughly tested individually, then the entire assembled compressor goes through a comprehensive testing and inspection process. Shafts Full magnetic particle inspection is conducted on the shaft. Other tests include complete sonic inspection, dimensional checks, and tests for electrical and mechanical run-out and concentricity. Rotating elements To ensure top performance at installation, the shaft and impeller are assembled and balanced as...

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