BHD Series 2017-11-03T18:57:36+00:00

BHD Series

Breathing Air Desiccant Air Dryer

50 – 1,000 scfm

The Aircel BHD series is fully automatic breathing air system that utilizes a unique dual tower regeneration process. The BHD Series purifies compressed air to breathable air by removing a variety of contaminants including dust, dirt, water, oil, hydrocarbon vapor and dangerous levels of carbon monoxide.

The Aircel Programmable Controller (APC) provides complete control of the system with text description of each step in the sequence of operation. A high quality Carbon Monoxide (CO) Monitor is standard providing constant sensing of CO concentrations to ensure the safety of all users. The BHD Series has robust valving and includes high quality coalescing pre-filter, activated carbon after-filter, and a particulate final-filter mounted as a standard feature.

The BHD Series achieves a unique seven stage purification process without the addition of a 3rd purification vessel that is required and utilized by many competitive designs.

  • ISO 8573.1 Class 2 (-40°F/-40°C) dew point performance
  • Seven step purification process in two tower design delivers Grade D breathing air
  • Ambient Air Temperature: 38°F – 105°F
  • Inlet Air Temperature: 40°F – 100°F
  • Operating Pressure: 60 to 175 psig

For larger capacities, higher pressures, and custom dryer options, please contact an Aircel factory representative.

Model NumberCapacityVoltageConnection SizeWeight (lbs.)HeightWidthDepth
BHD‑5050115‑1‑601/2″ NPT475722622
BHD‑8080115‑1‑603/4″ NPT550763024
BHD‑100100115‑1‑601″ NPT675763024
BHD‑150150115‑1‑601″ NPT850843424
BHD‑200200115‑1‑601.5″ NPT975853424
BHD‑250250115‑1‑601.5″ NPT1,150864630
BHD‑300300115‑1‑601.5″ NPT1,250864630
BHD‑350350115‑1‑602″ NPT1,350874630
BHD‑450450115‑1‑602″ NPT1,550895030
BHD‑500500115‑1‑602″ NPT1,750895030
BHD‑600600115‑1‑602″ NPT2,050895030
BHD‑750750115‑1‑603″ FLG3,100937140
BHD‑1,0001,000115‑1‑603″ FLG4,400987240
  1. Stage 1: Inlet Particulate & Coalescing Pre-Filter
    The pre-filter removes particulates, water aerosols, and oil mist content efficiently. The pre-filter is equipped with a differential pressure indicator and a zero-loss automatic condensate drain valve.

  2. Stage 2: 13X Molecular Sieve
    The inlet portion first layer of the adsorbent media filled in the towers is 13X molecular sieve to remove contaminants such as volatile organic compounds, acid forming gases, base gases and moisture.

  3. Stage 3: Activated Alumina
    This layer of activated alumina removes moisture to a dewpoint of -40°F and below at line pressure.

  4. Stage 4: Carulite Catalyst
    The catalyst layer is used to convert carbon monoxide to carbon dioxide and to oxidize residual hydrocarbon vapors.

  5. Stage 5: Activated Alumina
    This final layer of activated alumina is installed at the top of the towers to remove residual contaminants.

  6. Steps 2-5: The towers adsorb and regenerate alternatively. The regeneration of this unique multi-layer adsorbent media and catalyst arrangement typically extends its life under normal conditions to three years. The control system sequence is monitored by a standard fail to switch system using pressure transducers and alarms when the system does not function properly.

  7. Stage 6: Activated Carbon After-Filter
    The activated carbon contained in the filter element assures a residual oil vapor content below 0.003 ppm. The filter is equipped with a manual ball valve.

  8. Stage 7: Sub-Micron Final-Filter
    The final-filter efficiently removes fine aerosols and particulates generated in the system. The filter is equipped with a differential pressure indicator and manual ball valve.

  9. The outlet air is monitored by a high quality Carbon Monoxide (CO) analyzer and triggers an alarm when a preset level is reached.