Deltech - Model DSHD Series -Heatless Modular Desiccant Air Dryers
The DSHD Series by Deltech represents a line of heatless modular desiccant air dryers that are engineered for critical environments where moisture control is essential. Targeted at applications such as laboratories, hospitals, and pharmaceutical manufacturing, these dryers offer consistent performance with dew points meeting ISO 8573-1: 2010 Class 1 and Class 2 standards. The system operates by alternating between two desiccant beds using a process that directs compressed air through one tower while the other is being regenerated. This design ensures a continuous flow of ultra-dry air. The dryers deliver flow rates ranging from 7 to 40 SCFM, with an operation mechanism based on a solid-state timer for controlling purge and repressurization phases. Featuring compact and easy-to-install units, the DSHD Series integrates reliability with efficiency, making it suitable for installations with spatial limitations. The airflow is managed to maintain optimal dew point levels, even as external conditions fluctuate.
DSHD Series Modular Desiccant Air Dryers are ideal for point of use, laboratories and confined areas. They provide a continuous supply of dry compressed air by automatically cycling the flow of air through two desiccant beds.
Deltech’s DSHD Series Modular Desiccant Air Dryers protect moisture sensitive applications requiring low pressure dew points. Delivers dew points of ISO 8573-1: 2010 Class 1 (-94°F, -70°C) and Class 2 (-40°F, -40°C) with flow rates of 7 to 40 scfm (12 to 68 nm3/h). Critical applications include labs, hospitals, pharmaceutical manufacturing and other high-tech installations.
The DSHD Series incorporate a time proven design, with superior features and reliability, in a compact and easy to install package. Standard features include:
Compressed air enters the dryer and is directed to Tower 1 by valve (A), and then to the dryer outlet through shuttle valve (B). A portion of the dried air is throttled to near atmospheric pressure by means of orifice (C). This extremely dry, low-pressure air flows through and regenerates the desiccant in Tower 2 and is exhausted through purge/repressurization valve (D) and exhaust muffler (E) to atmosphere. After a set time, the automatic solid state timer closes purge/repressurization valve (D) allowing Tower 2 to repressurize slowly. At the end of 2 minutes, valve (A) shifts and purge/ repressurization valve (D) reopens. The main air flow is now dried by Tower 2 while Tower 1 is being regenerated.