REGENERATIVE HEATLESS DRYERS
Twin tower regenerative dryers are the dryers of choice when     traditional refrigerated dryers do not provide sufficient air quality required for today's applications.  Arrow's reliable "RH" series of heatless twin tower regenerative dryers normally produce a -40ºF and can optionally be as low as -100ºF dew point.  The dryer utilizes activated alumina for efficient drying of compressed air and will operate under extreme environmental conditions.  Activated alumina is aluminum oxide that is highly porous and exhibits tremendous surface area (350 sq. meters/gram).  It has a smooth uniform ball size that prevents channeling of the air flow, which maintains low bed velocities.  This maintains air contact time for efficient moisture removal and minimal pressure drop.  Arrow's microprocessor dryer controls are housed in a NEMA4 rated enclosure and provide control of pneumatically piloted valves chosen for long life and high air flow.  

BLOWER PURGE REGENERATIVE DRYERS
Arrow Pneumatics "BP" series blower purge regenerative dryers are made economical to operate than heated or heatless regenerative dryers.  An external blower supplies heated atmospheric air as the purge air source for regeneration.  
This allows total air compressor capacity for plant operations.  Eliminating the use of compressed air as purge allows the plant to more economically size the compressor for only plant operations. The blower purge offers the same easy maintenance features found in our heated regenerative dryer.  The blower is designed for industrial applications and has an intake filter that protects the blower and dryer from damaging air born particles.