Regenerative and refrigerated air dryers include the D11 and D50 series. The D11 features continuous compressor operation for ambient temperatures of more than 40° F. The D50 is equipped with twin dessicant-packed towers, timer-controlled shuttle valves, and a calibrated needle to control pressure dew point conditions. It has a standard dewpoint fo 40° F and optional pressure dew point of 66° F.

IMI Norgren Inc., (303) 794-2611, www.norgren.com