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Allegro 9878-151 Wall-Air Inline Filtration Panel without CO Monitor

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Allegro air filtration panels filter impurities and hydrocarbons from an air compressor to convert to breathable air. Panel provides up to 150 CFM (254.8 m3 /hr) of air within a 5-125 PSI (.34-8.62 bar) range. Meets NIOSH requirements for point-of attachment. 1-12 Workers.


  • 12 gauge black powdered coated steel mounting bracket
  • All brass plumbing with quick-disconnect Hansen couplers
  • Inlet side: 1” NPT male nipple, made of Brass
  • Outlet side: ¾” NPT male nipple, made of Brass

CO MONITOR: (Included in 9878-150 model)

  • Power source: 115V AC to 9V DC power adapter for continuous power supply.
      • 9V DC Alkaline battery (primary or as back-up for AC adapter).
  • Alarm Setting: 10 PPM (Canada: 5PPM)
  • External Connections: Optional Strobe Light Alarm.
  • Audible: 90 decibel Piezo Alarm.
  • Visual: External power LED light signal.
  • Sensor: Electrochemical replaceable
  • Display: Liquid crystal
  • Keys: Mode & Set
  • Modes: Normal Operation, Peak, Battery Charge and Calibration mode.
  • Calibration: Self adjusting calibration to 20 PPM CO


  • First Stage: 5 micron particulate filter element and automatic mechanical drain
  • Second Stage: 0.010 micron coalescing filter element and manual drain
  • Third Stage: 0.003 micron activated carbon filter element and manual drain
  • Regulator: High pressure, adjusting pressure knob, 0-160 psi (0-11.03 bar) pressure gauge and external relief valve
  • Flow Meter: Adjustable metering valve, range from 0.0-1.0 LPM

22" L x 10" W x 19" H
Weight: 27 pounds

Allegro single outlet and single inlet inline filter panels provide airline respirators a portable source of breathable air while ideally designed for filtering air anywhere within the airline system downstream from outlets. We offer our inline filter panels in both Carry-Air™ and Wall-Air™ configurations. All models meet NIOSH requirements of point-of-attachment. The Carry-Air™ models provide up to 8 airline respirators a portable source of up to 100 CFM of breathable air from 5-125 psig. They’re house in a rugged Pelican case for portability and protection. They also include a support stand for stability and up-right operation. Available with CO monitor.

The AC/DC powered Wall-Air™ models provide up to 12 airline respirators a portable source of up to 150 CFM of breathable air from 5-125 psig. These units are easily mounted on any wall to keep them out of the way in your workshop area. Available with or without CO monitors.


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