MILW-50SD desiccant dryer

This is the other route to the water digit of ISO 8573-1. Instead of cooling the air until the moisture condenses, it passes the air through a bed of activated alumina that holds the moisture back, and regenerates the bed without heat, using a fraction of the air already dried. That is why it reaches a sub-zero dew point, which a refrigerated dryer cannot deliver.

Specifications

Drying capacity	250 CFM · 7.08 m³/min · 424.8 m³/h
Dew point	−20 °C — see the note below
Working pressure	87 to 188 PSI — 6 to 13 bar
Inlet temperature	1.5 to 50 °C
Ambient temperature	up to 45 °C
Desiccant	activated alumina, 4 to 8 mm
Regeneration	heatless
Inlet and outlet	1 1/2” female
Electrical	220 V, 2-phase, 60 Hz
Dimensions	615 × 445 × 1,600 mm · 155 kg

The manufacturer sheet writes the dew point as “−20 ~ 40 °C”, a range whose second end does not read as a specification. We publish −20 °C here because it is the only figure in that range that works as a design value, and we confirm it in writing before quoting.