Desiccant compressed air dryer Twin Tower 975

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Overview
The Twin Tower 975 Series is a regenerative pressure swing dryer combining high-efficiency coalescing filtration and twin-tower desiccant drying to provide continuous drying and filtration of compressed air for North American railroad and industrial pneumatic systems.

Benefits

• Eliminates corrosion and freezing issues in pneumatic components by supplying dry compressed air.
• Removes varnished compressor oil that can clog orifices, cause valves to stick and damage metal surfaces.
• Removes solids (rust, scale, dirt, wear particles) that, if entrained in high-speed air streams, abrade and erode components.

Design and application
Engineered as an integrated filtration and continuous drying package, the Twin Tower 975 uses a high-efficiency coalescer upstream of two desiccant-filled towers. It is suited for demanding rail and industrial environments and can be equipped with memory function, optional heaters, mufflers and mounting brackets for system integration.

Technical specifications

• Operation: twin tower, pressure swing regeneration, 60 second cycle
• Desiccant material: molecular sieve (standard) or optional activated alumina
• Pressure: 0–150 psig (0 to 10 bar) operating
• Temperature: +32°F to +150°F (0°C to +65°C) without optional heaters; -40°F to +150°F (-40°C to +65°C) with optional heaters
• Inlet flow: 60 SCFM nominal
• Pressure drop: 5 psig (0.3 bar) at 60 SCFM (1700 l/min) across entire assembly
• Coalescer filtration rating: 99.9% efficiency @ 0.3 micron aerosol
• Current: 1.0 A max. @ 74 VDC; 3.0 A max. @ 74 VDC with optional 35 W heaters; 5.0 A max. @ 74 VDC with optional 75 W heaters
• Operating voltage: 48 to 138 VDC
• Electrical connections: quick disconnect
• Exposure: resistant to direct water spray and impact from flying objects
• Size: 13 3/8" (339.7 mm) (W) x 23 11/16" (601.7 mm) (H-with bracket) x 15 1/4" (387.4 mm) (L)
• Weight: 114 lbs (51.7 kg)
• Options: memory option; three 35 W or 75 W heaters with integral thermostats; mufflers; mounting bracket