Energy Machinery, Inc.
10 Reservoir Park Drive Rockland, MA 02370 Phone:781-871-6220 • Fax:781-878-7085• Toll Free:1-800-643-4330 E-Mail:info@energymachinery.com
• Web site:www.energymachinery.com
Gardner Denver DGH Series
Heatless Desiccant Dryers were
designed to help you meet
your goals. Customizable
performance technology is
integrated into our standard
product so it can be tailored to
benefit your specific critical
compressed air drying
application. Now, you have the
liberty to personalize the
performance of the standard
product to adapt to your
specific needs.
Pressure drop at rated flow is less than 5 psi
Standard voltages: Controllers automatically identify and adapt the controller:
Basic: 100-120V/1ph/5-60Hz;
Standard and Energy Savings controller: 100-240V/1ph/50-60Hz & 12-24 VDC
NEMA 4 Standard Feature with Standard and Energy Savings controllers
Inlet flows are established in accordance with CAGI Standard ADF-200: Dual Stage Regenerative
Desiccant Compressed Air Dryers-Methods for Testing and Rating. Conditions for rating dryers are:
inlet pressure of 100 psig, inlet temperature saturated at 100°F.
Average purge flow rate is the amount of purge air used during the regeneration portion of the
purge cycle (purge/repressurization valve open) plus the volume of air used to repressurize the
tower after the purge/repressurization valve closes averaged over the cycle time. At 100 psig, the
average purge rate is: 14.4% (13.7% for regeneration + 0.7% for repressurization) of rated inlet
flow for dryers operating on a 10 minute cycle; 15.5% (13.7% for regeneration + 1.8% for
repressurization) for dryers on a 4 minute cycle.
Outlet Flow: To determine flow of air available at outlet of dryer, subtract purge flow from inlet flow.
