Spiraxial Compressor
For use with the GE Frame 5 Gas Turbine

Spiraxial 51/4x 63/4 LAL-SP-SVP atomizing air compressor
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:
Dresser-Rand
1101 Cavalier Blvd.
Chesapeake, VA 23323
Tel: 757-487-6000
Fax: 757-487-9450
Dresser-Rand
Corporate Headquarters
West8 Tower Suite 1000
10205 Westheimer Road
Houston, TX 77042 USA
Tel: (Int’l +1) 713-354-6100
Fax: (Int’l +1) 713-354-6110
email: info@dresser-rand.com
112, Avenue Kleber
75784 – Paris Cedex 16
Tel: (Int’l +33) 156 26 71 71
Fax: (Int’l +33) 156 26 71 72
email: info@dresser-rand.com
Regional Headquarters
The Americas
Dresser-Rand
West8 Tower Suite 1000
10205 Westheimer Road
Houston, TX 77042 USA
Tel: (Int’l +1) 713-354-6100
Fax: (Int’l +1) 713-354-6110
EMEA
(Europe, Middle East, Eurasia, Africa)
Dresser-Rand S.A.
31 Boulevard Winston Churchill
Cedex 7013
Le Havre 76080 France
Tel: (Int’l +33) 2-35-25-5225
Fax: (Int’l +33) 2-35-25-5366 / 5367
Asia-Pacific
Dresser-Rand Asia Pacific Sdn Bhd
Unit 8-1, 8th Floor
Bangunan Malaysian Re
17 Lorong Dungun
Damansara Heights
50490 Kuala Lumpur, Malaysia
Tel: (Int’l +60) 3-2093-6633
Fax: (Int’l +60) 3-2093-2622

Dresser-Rand offers new, refurbished and remanufactured Spiraxial atomizing air
compressors for a variety of
market applications. Dresser-Rand
purchased the Spiraxial compressor
product line in 1998 from Dresser
Roots and is now the OEM.
The design of this unique compressor relies on nearly half a century of
experience. It was developed for marine
deballast, as an atomizing compressor for power generation applications,
and for use in a variety of commercial
applications, such as tank aeration and
fly ash conveying. It is well-known for its
rugged construction, long life and easy accessibility.

Mode of operation
As a positive displacement compressor, the Spiraxial compressor displaces a specific
amount of air with each revolution. Each rotor is a single-screw thread. As the two
rotors intermesh, they rotate in opposite directions. The inlet cavity is positioned so
that the advancing helix closes off the pocket of air after it has filled. As the helix
advances, the pocket squeezes the air against the discharge end headplate. After the
required degree of compression has been reached, the rotor uncovers a
discharge port and compressed air is released into a plenum in the headplate.

New units/overhauls/parts
New units are available for immediate delivery from our facility and are mechanically
and performance tested before shipment. Export boxing and shipment are available.
Overhaul kits are available and include bearings, seals, gaskets, O-rings and hardware.
Overhauls are performed at our service center in Chesapeake, Virginia, and each overhaul includes a performance and mechanical test prior to shipment.
All parts for the Spiraxial 51/4 x 63/4 LAL-SP-SVP atomizing air compressor are available
at our Chesapeake service center.
©2003 Dresser-Rand. Form 2012
This document comprises a general overview of the products described herein. It is solely for informational purposes, does not
represent a warranty or guarantee of the information contained herein and is not to be construed as an offer to sell or a solicitation 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.