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  • 4 to 35 SCFM capacities
  • 232 PSI pressure rated
  • -40°F standard pressure dewpoint
  • 12 to 24VDC or 100 to 240VAC
  • 122°F max inlet temperature
  • 3/8" connection size
  • ISO Class 2 (ISO 8573-1:2010)


The Walker Filtration PROSFD PD1 Desiccant Air Dryer is a heatless desiccant compressed air dryer that delivers high performance and an efficient supply of dry, clean air to the point of application.

The PROSFD PD1 models have flow rates ranging from 4 to 35 SCFM. These models are designed for compressed air drying and are perfect for smaller point-of-use applications. They utilize the latest drying technology and come equipped with an XA grade 0.01 micron coalescing filter, an integrated X1 grade 1 micron dust filter, and a float drain. With a reduced purge rate, a compact design, and energy and condensate management features, these models offer energy efficiency and reduced operating costs.

The PROSFD dryer is designed and tested to meet purity classes specified by ISO 8573-1: 2010. PROSFD is built to be fully compliant with international standards and has multiple voltage options, suitable for worldwide installation.