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 11 bar. Pressures up to 25 bar on request.

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.

For vessel switch-over a 3/2-way valve with a double-acting pneumatic actuator is provided on the inlet side. On the outlet side, the flow paths are secured using non-return valves. Expansion and regeneration are carried out via separately controlled pneumatic actuated seat angle valves.

A silencer is used for effective reduction of the expansion noise.

For this dryer size the filters are not included in the scope of supply of the dryer.

But prefilters (fine filters) that prevent solid particles (< 0.01 µm) and liquid contaminants (< 0.01 mg/m³) from entering should be installed upstream of the dryers in order to increase the service life of the desiccant. An afterfilter (general purpose filter) should be installed downstream of the dryer in order to prevent possible desiccant dust (< 1 µm) from entering.

The dryers comply with the requirements of the Pressure Equipment Directive 97/23/EC, and have the CE marking of this European directive.