Wabtec Model QBA Series Air Dryers are designed for the critical demands of stop-and-go, high-air usage transit buses.
Patented multi-stage filtration components combined with twin-tower drying technology reliably filter heavy sludge, oil, carbon, water and dirt contamination. The QBA Series Air Dryers also eliminate troublesome winter air-line freezing. As the world leader in air-drying technology for severe duty, heavy rail, locomotive and rail transit industries, QBA Series Air Dryers deliver extraordinary performance, unequaled reliability, and lasting value.
Optimized, trouble-free performance in severe duty, transit bus environment
- Patented multi-stage, high-capacity filtration
- Advanced twin-tower design for continuous operation
- Self-cleaning stainless-steel scrubber pad
- Easy to install and replace
- Re-build kits available
- Available with compressor unload and turbo maintaining valves
- Heater/thermostat optional
- 2 models available
Specifications |
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Model: |
QBA15 |
QBA60 |
Max Inlet Flow Rate: |
21 SCFM / 600 Nl/min |
60 SCFM / 1700 Nl/min |
Max Working Pressure: |
150 psi / 10.3 bar |
50 psi / 10.3 bar |
Operating Voltage: |
12/24 (9-36) VDC |
12/24 (9-36) VDC |
Current Draw, Heaters Off |
<1.0 A |
<1.0 A |
Current Draw, Heaters On: |
<10.0 A, all voltages and wattages |
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Heater Power: |
75 W @ 12 VDC |
75 W @ 12 VDC |
Regenerating Air Flow: |
<20% of inlet air flow |
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Pressure Drop: |
4.1 psi / .28 bar |
5.1 psi / .35 bar |
Drying Media: |
Activated alumina |
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Package Configuration |
Includes integrated filtratio and control unit |
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Height: |
16.84” / 429 mm |
18.02” / 458 mm |
Width: |
12.48” / 317 mm |
13.68” / 347 mm |
Depth: |
8.74” / 222 mm |
11.71”/ 297 mm |
Weight (with and w/o Bracket): |
43#/35# / 19.5 kg/15.9 kg |
51#/45# / 23.1 kg/20.4 kg |
Maintenance: |
Annual filte element changes. Three (3) year desiccant change. Available with unloader valve. |
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