New air dryer technology guarantees pressure dew point at very low cost

After years of testing and development, Atlas Copco launches a revolutionary new rotary drum dryer that guarantees a stable Pressure Dew Point (PDP) of -40°C, with no compressed air loss, at a very low energy cost. Offering total power consumption below 0.2 kW in all operating conditions, the MDG 450 air dryer is highly energy efficient and represents a ground-breaking new entry in the compressed air market.

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The MDG rotary drum dryer guarantees a stable PDP of -40°C with no compressed air losses at a very low energy cost

The MDG rotary drum dryer guarantees a stable PDP of -40°C at a very low energy cost

A dryer’s efficiency is normally defined by two factors: its electrical consumption and the amount of compressed air it purges,” commented Mark Ranger, Business Line Manager of Atlas Copco’s Oil-Free Air division in the UK.

Ranger added, “Today most existing air dryers can’t live up to the demand for a stable PDP of -40°C combined with low power consumption. However, in the MDG 450 dryer we can now provide our customers with an extremely energy-efficient solution that also guarantees a high quality of compressed air.

The low energy consumption of the dryer is the result of electrical power only being consumed by the 40 W rotation motor and control equipment.

MDG 450 rotary drum dryer (Left) and ZR 132 VSD oil-free air screw compressor (Right)

MDG 450 rotary drum dryer (Left) and ZR 132 VSD oil-free air screw compressor (Right)

The MDG 450 dryer has a simple valve-free design, including no heating elements or blower and few moving parts. This, plus the fact there are no inlet filtration requirements, reduces maintenance costs and enhances reliability. The small footprint of the dryer also eases installation and conversely means less space is taken up in end customers’ facilities.

The MDG 450 rotary drum dryer is due to go into production before the end of 2017. To pre-order, please click here. Alternatively, explore Atlas Copco's complete compressor dryer range.

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Editor's Notes:
Atlas Copco Compressors is the GB sales and service operation of the Atlas Copco Group providing oil-free and oil-injected stationary air compressors, gas and process compressors, vacuum pumps, turbo expanders, nitrogen generators, air treatment equipment (such as compressed air dryers, coolers, and filters) air management systems, and custom designed engineered packages.

Atlas Copco Compressors’ sales and distribution network means that specialist compressed air advice and service is always within easy reach. A team of over 80 service engineers operates across the country, to ensure maximum running efficiency and minimum downtime at its customers' sites.

In the United Kingdom, Atlas Copco also handles the sales and marketing of construction and mining equipment, portable compressors and electric power generators, industrial power tools and assembly systems – all backed up by a nationwide sales, distribution, service and maintenance network.

Atlas Copco is a world-leading provider of sustainable productivity solutions. The Group serves customers with innovative compressors, vacuum solutions and air treatment systems, construction and mining equipment, power tools and assembly systems. Atlas Copco develops products and services focused on productivity, energy efficiency, safety and ergonomics. The company was founded in 1873, is based in Stockholm, Sweden, and has a global reach spanning more than 180 countries. In 2016, Atlas Copco had revenues of BSEK 101 (BEUR 11) and about 45,000 employees. Learn more at

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For further editorial information contact Chris Butcher on 01582 390980.

For product or sales enquiries please contact 0800 181085.

For further company information contact Joanna Canton Long on 01442 222240.

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2017 Product Air and gas treatment Air dryers Rotary drum dryers MDG