Adsorption dryers of the DPS series are designed for drying compressed air and nitrogen to pressure dew points of -25°C to -70°C (depending on the design) at operating pressures of 4 bar to 16 bar. 

The desiccant has a high drying capacity for moisture and a long service life of several years. This ensures permanently low and stable pressure dew points.

The valves and flow paths required for vessel chamber switch-over are completely installed in valve blocks. This integrated design eliminates the need for time-consuming piping installation and minimises the leak potential. Air flow cross-section sizes above average minimise the pressure loss. 

The solenoid valve combination consists of 4 pilot-controlled diaphragm valves. Thanks to the individual con-trol option for each valve, overlapping switch-over and a defined flow path is ensured at any time. The non-return valve combination consisting of 2 non-return valves is also installed in a leak-free aluminium valve block. A silencer is used for effective reduction of the expansion noise.

As standard, the dryer is provided with a prefilter (fine filter) which prevents solid and liquid contaminants from entering the dryer. This increases the service life of the dryer. An afterfilter (general purpose filter) is also provided as standard. It is used to prevent desiccant dust from entering the downstream system. The filters are directly flanged to the upper valve block. Therefore, piping material is not required.

The dryers comply with the requirements of the Pressure Equipment Directive 97/23/EC, and some (depending on the model) have the CE marking of this European directive.