997 SeriesTwin Tower Air Dryer System

wabtec westinghouse air brake 997 SeriesTwin Tower Air Dryer System

The 997 is a scaled up version of the 995. The 997 is primarily used by international transit customers where the air flow demand exceeds that of the 995.Technical Specifications

  • Operation: Twin tower, pressure swing regeneration, desiccant dryer; 60 second cycle per tower (48 sec, 12 second repressurization)
  • Desiccant Material: Activated alumina
  • Pressure: 0-160 psig (0 to 11 bar) operating
  • Temperature: -40° F to +151° F (-40° C to + 66° C) with optional heaters
  • Operating Voltage: Model dependent, 96 VDC nominal (66 to 121), 110 VDC nominal (77 to 137.5), and 24 VDC nominal (22 to 28.5)
  • Power: 96 & 110 VDC systems - 529 watts @ 137.5 VDC, 24 VDC systems - 178 watts @ 28.5 VDC
  • Inlet Flow: 44 SCFM nominal(1,250 l/min), 70 SCFM maximum (1,982 l/min)
  • Coalescer Filtration Rating: 99.9% efficiency @ 0.3 micron aerosol
  • Final Filter Rating: 5.5 micron MFP (Mean Flow Pore) size
  • Muffler: Dryer exhuast port
  • Exposure: IP56
  • Weight: 116 lbs ( 52.7 Kg)
  • Noise: Max 82 dBA, nominal <60 dBA