VALVE-IN-PISTON COMPRESSORS

The Valve-In-Piston (VIP®) compressor was introduced in 1993 as a small unit for the Dresser-Rand line-up of gas field compressors. A combination of field-proven success and new advanced design techniques has enabled development of a complete line of VIP compressors, ranging from 15,400 (68 kN) to 45,000 (200 kN) pounds rod load. Since its introduction, more than 1,000 VIP cylinders have been produced for the gas field market.

Dresser-Rand’s VIP compressor design has a lower percentage of clearance when compared with conventional “valve- in-barrel” cylinders. This translates into higher volumetric efficiency and performance for each cylinder size. VIP compressors also have inherently lower reciprocating weights which result in fewer unbalanced moments and reduced vibration. The result is a highly efficient, smooth-running compressor.

A streamlined system that reduces weight, increases efficiency, and is easy to maintain.

“A Stroke of Genius”

VIP compressors have fewer parts than those with conventional cylinders. For most compressor cylinder types this may mean 40 fewer parts. The VIP units have only four compressor valves, regardless of bore size, whereas many other cylinders have as many as 16 valves. There also are no valve covers on VIP compressors; this feature eliminates potential gas leak paths. Fewer parts coupled with fewer valves means lower maintenance costs for VIP compressor owners.

The success of the VIP line is the result of product development using advanced design tools, exhaustive laboratory testing, and field reliability of the complete line-up of Dresser-Rand’s VIP compressors.

That’s why we believe the VIP compressor to be “A Stroke of Genius.”

Design and construction details of the VIP compressor

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©2004 Dresser-Rand Company. Printed in U.S.A. Form 85199

This brochure comprises a general overview of the Dresser-Rand Company products described herein. It is solely for informational purposes, does not represent a warranty of the information contained herein and is not to be construed as an offer to sell or a solicit to buy. Contact Dresser-Rand Company for detailed design and engineering information suitable to your specific applications. Dresser-Rand Company reserves the right to modify its products and related product information at any time without prior notice.

For more information on the VIP compressor, visit us on the Internet atwww.dresser-rand.com/gfc or contact us at:

Dresser-Rand Company Gas Field Compressors1354 South Sheridan RoadTulsa, Oklahoma 74112-5416USA Phone: (918) 254-4099Fax: (918) 252-9055E-mail: GFC@dresser-rand.com

Dresser-Rand Company Reciprocating Operations100 Chemung StreetPainted Post, NY 14870 USAPhone: (607) 937-2011Fax: (607) 937-2905

For a complete list of D-R products and services, visit us on the Internet at www.dresser-rand.com or contact us at the following locations: Company Headquarters Dresser-Rand Company1200 West Sam Houston Pkwy. N.Houston, TX 77043Tel: 713-467-2221Fax: 713-935-3490email: info@dresser-rand.com Regional Headquarters The Americas Dresser-Rand Company 1200 West Sam Houston Pkwy. N.Houston, TX 77043Tel: 713-467-2221Fax: 713-935-3490 European Served Areas (ESA)(Europe, Eurasia, Middle East, Africa)Dresser-Rand S.A.31 Boulevard Winston ChurchillCedex 7013Le Havre 76080 FranceTel: 33-2-35-25-5225Fax: 33-2-35-25-5366 / 5367

Asia-PacificDresser-Rand Asia Pacific Sdn BhdUnit 8-1, 8th FloorBangunan Malaysian Re17 Lorong DungunDamansara Heights50490 Kuala Lumpur, MalaysiaTel: 603-2093-6633Fax: 603-2093-2622