Graham-White Manufacturing Co.
Graham White
Air Dryers

As the world leader in air drying technology, we can safely boast of an unmatched ability to customize this technology into drying products that match exact and unique applications. Custom applications include size and envelope concerns, withstanding severe shock and vibration along with the ability to survive in dirty, extreme temperature environments. Other challenges include the filtering and drying of severely contaminated hot compressed air, dew point performance tailoring, mounting orientation, and strict AC or DC voltage requirements. The technology leadership of Graham-White is most evident in the heavy rail and rail transit industries worldwide. These markets are where our exceptional track record of fulfilling custom challenges has produced cost effective solutions.

Graham-White is the World's Leading manufacturer of Compressed Air Dryers for use in Heavy Rail, LRV, and Transit applications.

For application assistance, contact Graham-White at sales@grahamwhite.com.

The following parameters should be provided to properly size an air dryer:

  • Copies of any pertinent specifications
  • Rated output of compressor
  • Nominal air flow at the dryer's inlet
  • Nominal, min, and max ambient temperatures
  • Nominal and maximum inlet temperatures
  • Dryer mounting location
  • Required dew-point depression or %RH at outlet with respect to a stated ambient
  • Number of locomotives and cars in a typical train
  • Whether or not trainline synchronization exist


    994-500 Series Air Dryer System
    The newest version of air dryer to use Graham-White's innovative technology to produce clean, oil-free, dry compressed air for use in locomotives, the 994-500 offers a lower-cost alternative for locomotives operating in the range of 3,000-4,000 hp. The 994-500 is fully interchangeable with the "life cycle cost saving "994-100 series and has half the moving parts of the original 975 Series line, saving the customer both initial and upkeep expense.


    975 Series Twin Tower Air Dryer System
    The 975 Series Twin Tower Air Dryer System is designed to deliver Dry, Oil Free and Clean air to the entire locomotive and train compressed air system. With almost three decades of service the 975 model has earned its reputation as the most widely used and dependable regenerative pressure swing dryer system in the North American railroad industry. .

    Information listed below is for the most common product configurations. Contact GW for non-standard product information and/or to confirm part numbers prior to placing orders.


    QBA15-CA Air Dryer System
    The SludgeBraker QBA15-CA is the rail version of Graham-White's "Sever-Duty" Truck and Bus Air Dryer. Sludgebraker is equipped to fulfill the critical demands of inner city, stop and go, high air usage, “Severe-Duty” vehicles. The QBA15 combines multiple high efficiency filtration components with twin tower drying technology in one easy-to-install, compact package.

    The QBA15-CA model is used in the rail market as both a point of use solution on locomotives for protection of RCL valve sets and on MOW equipment applications.

    QBA15-CA is designed for flow rates between 10 and 20 scfm at a maximum operating pressure of 150 psi.

    QBA15-CA Model does not include the PF15 Prefilter / Scrubber Assembly.


    995 Twin Tower Air Dryer System
    The custom design features of the 995 Air System make it a perfect match for the rigorous needs of the rail transit industry. Typical rail transit space limitations are of no concern. By design, the 995 Air Dryer System can be mounted inside the present D4 compressor frame. For the ultimate in Dry, Oil free, Clean compressed air and trouble free performance, specify the Graham-White 995 Rail Transit Air Dryer System.

    Information listed below is for the most common product configurations. Contact GW for non-standard product information and/or to confirm part numbers prior to placing orders.


    997 SeriesTwin Tower Air Dryer System
    The 997 is a scaled up version of the 995. The 997 is primarily used by international transit customers where the air flow demand exceeds that of the 995.


    994-100 Series Air Dryer System
    The 994-100 Series Air Dryer System is no longer available as a new item. Graham-White continues to offer service parts, R&R service, and Overhaul service for the 100 Series. The 500 Series is now offered in place of the 100 Series when a new assembly is required.


    5-in-1 Air System
    Graham-White's "5-in-1" Air System incorporates many of the unique design and performance features of its rail counter part. Perfect for stationary and mobile platform applications, Complete Filtration and Drying package in one compact unit. Capacities up to 1000 SCFM. Dew Points tailored for specific needs from -100oF to +50oF. No refrigerants required.

  • Customer Support

    User Name:
    Password:
     


    Customer Feedback

    Search: 
    February 2010 :
    Graham-White Adds Solutions

    January 2010 :
    Graham-White:Ninety-Five Years of Success, Lifetimes of Achievement

    April 2009 :
    Graham-White Further Expands Market on African Continent:

    March 2009 :
    Re-energized Public Relations Effort

    February 2009 :
    Graham-White Acquires The Vista Corporation of Virginia

    February 2008 :
    Graham-White’s ASCTD Awarded Unconditional Approval from AAR

    August 2007 :
    Graham-White’s EAX Service Proves Popular with Customers

    August 2007 :
    Graham White E-Bell ® Advancements Set New Standard for Reliability

    July 2007 :
    Graham-White Air Dryers Installed in GETS Locomotives in Tibet, China

    June 2007 :
    Graham-White Receives Major Contract for SafeSet™ Wheel Style Electric Locomotive Parking

    July 2006 :
    Graham White seizes opportunities for continued growth in Remanufacturing Services

    June 2006 :
    Customers, Business Leaders Tour Graham White’s Newest REMAN Facility in Shreveport, La.

    May 2006 :
    THE Evolution OF AIR DRYING Technology

    January 2006 :
    Initial Field Tests Successful for SafeSet™ Wheel Style Locomotive Parking Brake

    November 2005 :
    Graham White Mfg. Announces Central US Location

    June 2005 :
    Graham-White's EAX Service Lets Customers Track Orders, Check Invoices 24/7

    May 2005 :
    Graham-White To Showcase Wide Range of Products at 2005 American Public Transit Conference

    December 2004 :
    NEW WEBSITE RELEASE

    November 2004 :
    Graham-White Unveils New Products at Global Railway Tech 2004

    July 2004 :
    Graham-White celebrates 90 years of service