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Aircel BHD Series Breathing Air
Heatless Desiccant Air Dryer

50 - 1,000 scfm
The Aircel BHD Series is a 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.

• Compact digital carbon monoxide (CO) monitor/alarm
• Mounted filtration: pre-filter, carbon after-filter, and final filter
• Aircel Programmable Controller (APC) protected with NEMA 4 electrical steel enclosure
• LED tower operation display indicating sequence of operation
• Automatic piston valve (inlet/outlet) with 10 year longevity
• Tower pressure gauges with large, easy-to-read 3.5" display
• Easy access to fill and drain ports for media replacement
• Unique purification media
• Red alarm strobe light

• Tower failure to switch alarm
• Downflow regeneration, upflow drying, and downflow depressurization


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.
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   Model
Catalog Order
Number
Inlet Air
Capacity
Outlet Air
Capacity
Voltage
Connection
BHD-50
AG9977401
50
40
115-1-60
½" NPT
BHD-80
AG9977440
80
64
115-1-60
¾" NPT
BHD-100
AG9977540
100
80
115-1-60
1" NPT
BHD-150
AG9977740
150
120
115-1-60
1" NPT
BHD-200
AG9977840
200
160
115-1-60
1½" NPT
BHD-250
AG9977940
250
200
115-1-60
1½" NPT
BHD-300
AG9932730
300
240
115-1-60
1½" NPT
BHD-350
AG9978040
350
280
115-1-60
2" NPT
BHD-450
AG9978140
450
360
115-1-60
2" NPT
BHD-500
AG9978240
500
400
115-1-60
2" NPT
BHD-600
AG9978340
600
480
115-1-60
2" NPT
BHD-750
AG9978440
750
600
115-1-60
3" FLG
BHD-1000
AG9978540
1,000
800
115-1-60
3" FLG

➤Click Here for BHD Series Outlet Air Quality

How It Works

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.

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.

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

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

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

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.

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.

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

Optional Equipment
• Outlet dew point sensor and readout
• Visual moisture indicator
• VOC Monitor (stand-alone system)
• Oxygen monitor (stand-alone system)
• VOC/Oxygen combo system monitor
• Optional communications: Profibus-DP, AS-I, CANopen, DeviceNet, and Ethernet




*Scroll to the right on mobile to see entire chart
Model
Weight (lbs)
Height (in)
Width (in)
Depth (in)
BHD-50
475
72
26
22
BHD-80
550
76
30
24
BHD-100
675
76
30
24
BHD-150
850
84
34
24
BHD-200
975
85
34
24
BHD-250
1,150
86
46
30
BHD-300
1,250
86
46
30
BHD-350
1,350
87
46
30
BHD-450
1,550
89
50
30
BHD-500
1,750
89
50
30
BHD-600
2,050
89
50
30
BHD-750
3,100
93
71
40
BHD-1000
4,400
98
72
40