Dual Mode Energy Saving Refrigerated Air Dryer - DRD Series

The DRD Series Dual Mode Energy Saving Refrigerated Air Dryers are designed to minimize the use of compressed air and electricity in their operation, and also to significantly reduce the operational costs of the compressor by minimizing pressure loss.

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    The importance of compressed air as a provider of energy for modern industrial processes is widely known. What is often overlooked is the need to provide quality treatment for this air. In fact, the air entering the system contains moisture which, when cooled, will turn into water, causing extensive damage not only to the compressed air network, but also to the finished product.
    These costly contamination problems can be avoided by installing a dual mode refrigerated dryer (ranging from 200 - 3000 scfm), with dual mode energy saving function (cycling/non-cycling) on models DRD325-DRD3000.
    Our 4-in-1 heat exchanger offers minimal pressure drops and class leading performance, and significantly increases the efficiency of the whole compressed air treatment process. The innovative dual mode function automatically and continuously adjusts dryer operation to the effective working conditions, minimizing operating costs and maximizing performances.
    Compressed air purification equipment must deliver uncompromising performance and reliability while providing the right balance of air quality with the lowest cost of operation. Many manufacturers offer products for the filtration and purification of contaminated compressed air, which are often selected only upon their initial purchase cost, with little or no regard for the air quality they provide, the cost of operation throughout their life or their environmental impact. When purchasing purification equipment, delivered air quality, the overall cost of ownership and the equipment's environmental impact must always be considered.
    • Optimum dewpoint levels for highest system performance
    • Advanced patented design solutions
    • Unique 4-in-1 heat exchanger
    • High reliability, easy to use and maintain
    • Environmental, lowest real operating costs
    • Dual mode integrated energy saving no loss level drain with back up timer drain with alarm on models DRD325 - DRD3000
    • Extremely low pressure drop design
    • Crankcase heaters
    • Dual mode energy saving function (cycling/non-cycling) on models DRD325 – DRD300
    • Advanced scroll compressor (400 scfm and up)
    • Oversized condenser to operate in ambient to 122˚F (50˚C) with pre-filter
    • 3rd party performance verified by CAGI
    • ETL listed & CRN registered complete unit
    • Dryers manufactured in facility certified to ISO9001 and ISO14001
    Minimal direct energy costs
    The Parker DRD Series Dual Mode Energy Saving Refrigerated Air Dryers are the most energy efficient air dryer on the market, under all operating conditions. DRD Series compliant scroll compressors (DRD400 – DRD3000) lead the market with the lowest full-load power consumption due to its oversized heat exchanger, compliant scroll compressors, R407C environmentally friendly refrigerant and direct operation, avoiding the increased energy consumption of thermal mass-type dryers. It consumes less energy at full load and saves more energy at partial loads. Electrical consumption usually accounts for around 50% of the air dryer's total cost over a five-year period.

    For more information or a detailed discussion about your specific requirements please contact Parker or an authorized Parker distributor.

Performance Characteristics



Optional Accessories

Pre and After Filtration

Connection Type

1 1/2" NPT-F, 2" NPT-F, 3" NPT-M, 4" Flg, 6" Flg

Maximum Flow Rate

339.8, 424.7, 509.7, 679.6, 849.5, 1189.3, 1359.2, 1699, 2038.8, 2718.4, 3398, 4077.6, 5097 m3/hour

Maximum Inlet Pressure Rating

100 psi

Maximum Operating Pressure

203 psi

Minimum Operating Pressure

60 psi

Maximum Operating Temperature

149 °F

Minimum Operating Temperature

65 °C

Maximum Ambient Temperature

122 °F

Minimum Ambient Temperature

41 °F

Refrigerant Type



183, 287, 320, 342, 529, 551, 816, 1279, 1477, 1521, 1609 lb


27.7, 27.8, 31.7, 39.7 inch


22.1, 41.2, 45.9, 43.2, 71.2 inch


38.3, 41.9, 52, 66.5, 67.8, 81 inch

Compatible Prefilter

Consult Factory

Compatible After Filter

Consult Factory

Compatible Prefilter Element

Consult Factory

Compatible After Filter Element

Consult Factory

Installed Condensate Drain Type

Timed or Electronic, Integrated or Electronic

Product Type

Compressed Air – Refrigerated
Smart Energy Saving

FAILURE OR IMPROPER SELECTION OR IMPROPER USE OF THE PRODUCTS DESCRIBED HEREIN OR RELATED ITEMS CAN CAUSE DEATH, PERSONAL INJURY AND PROPERTY DAMAGE. This document and other information from Parker-Hannifin Corporation, its subsidiaries and authorized distributors provide product or system options for further investigation by users having technical expertise. The user, through its own analysis and testing, is solely responsible for making the final selection of the system and components and assuring that all performance, endurance, maintenance, safety and warning requirements of the application are met. The user must analyze all aspects of the application, follow applicable industry standards, and follow the information concerning the product in the current product catalog and in any other materials provided from Parker or its subsidiaries or authorized distributors. To the extent that Parker or its subsidiaries or authorized distributors provide component or system options based upon data or specifications provided by the user, the user is responsible for determining that such data and specifications are suitable and sufficient for all applications and reasonably foreseeable uses of the components or systems. Click here to view all product safety information.

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Auburn Hills, Michigan,
United States, 48326