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HDA US Series

HDA US / 300 / 400 / 500 / 600 / 700 / 800 / 1000 / 1250 / 1500 / 200 / 2500 / 300 / 4000 / 4500 / 5000 / 6000

Hertz HDA US Heatless Desiccant Air Dryers provide constant -40 oF pressure dew point. These dryers are designed to supply clean and very dry compressed air for critical applications. Pre-filters and after-filters are supplied along with Hertz Heatless Air Dryers to keep the air stream clean and maintain the integrity of the desiccant medium. A very reliable electronic controller makes sure that the dryer operates perfectly all through the service life of the dryer.

HDA US Heatless Desiccant Dryers are equipped with very special valves and desiccants in order to perform very well and have one of the lowest pressure drops available in the Market.

General Information

Heatless Desiccant Air Dryers Principle Of Operation

The twin tower design allows for continuous adsorption of water vapor from compressed air by using the hygroscopic desiccant with high crush strength and a high surface / volume ratio. Drying is accomplished by passing compressed air through one desiccant bed adsorbing moisture while the other is being simultaneously regenerated with the expanded purge air.

Regeneration of desiccant is accomplished without the use of heat. The wet bed is dried by diverting a small portion of the super - dry air from the outlet at near atmospheric pressure. The purge flow rate is adjustable to suit the specific outlet conditions (desired dewpoint). The super dry air flows in a counter direction through the wet bed, sweeping all the water vapour previously absorbed by the desiccant.

HDA US ensures pressure equalization in the twin towers prior to switching. This prevents line surge and minimizes desiccant attrition.

The tower being reactivated will be gradually re pressurized at the end of its reactivation cycle before switchover take place. Purge flow and de-pressurization are in downward direction, counter flow to the drying air flow.

PLC Is Standard

HDA US Desiccant Dryers has a very reliable electronic controller makes sure that the dryer operates perfectly all through the servicelife of the dryer. Touch screen PLC is capable of showing the cycles as well as the valves which operate on real time. It also shows the dew point (if applicable).

User friendly multi-langual PLC helps the end users understand the operation system any field issues easily.

Activated Alumina

Hertz uses a mixture of adsorption media in its heatless range of desiccant dryers to achieve consistent dewpoint. Activated Alumina, Molecular Sieve and Silica Gel are used in varying ratios depending on the application.

Models and Technical Information

ModelCapacity**ConnectionVoltageMax,Working,PressureMax,Ambient,TempMax,Inlet,TempIncluded Dimensions (in,)Weight
m3/mincfmSize psi0F0FFilter and TypeLengthWidthHeight(lbs)
HDA US 3008.53001 1/2” NPT115V-1-60 Hz200120120HGO US 3504024871200
MX+MY+MP
HDA US 40011.34001 1/2” NPT115V-1-60 Hz200120120HGO US 5004626881350
MX+MY+MP
HDA US 50014.25002” NPT115V-1-60 Hz,200120120HGO US 5004626881460
MX+MY+MP
HDA US 600176002” NPT115V-1-60 Hz200120120HGO US 7004626881790
MX+MY+MP
HDA US 70019.87003” ANSI B16,5115V-1-60 Hz200120120HGO US 1100C/FC/FC/FC/F
MX+MY+MP
HDA US 80022.78003” ANSI B16,5115V-1-60 Hz,200120120HGO US 110055481052150
MX+MY+MP
HDA US 100028.310003” ANSI B16,5115V-1-60 Hz,200120120HGO US 110055481052960
MX+MY+MP
HDA US 125035.412503” ANSI B16,5115V-1-60 Hz200120120HGO US 130060501093470
MX+MY+MP
HDA US 150042.515003” ANSI B16,5115V-1-60 Hz200120120HGO US 160060501094180
MX+MY+MP
HDA US 200056.620004” ANSI B16,5115V-1-60 Hz200120120HF US 190070621154980
MX+MY+MP
HDA US 250070.825004” ANSI B16,5115V-1-60 Hz200120120HF US 250070621155800
MX+MY+MP
HDA US 30008530006” ANSI B16,5115V-1-60 Hz200120120HF US 380080701206400
MX+MY+MP
HDA US 4000113.340006” ANSI B16,5115V-1-60 Hz200120120HF US 380090801229100
MX+MY+MP
HDA US 4500127.445006” ANSI B16,5115V-1-60 Hz200120120HF US 5000C/FC/FC/FC/F
MX+MY+MP
HDA US 5000141.650006” ANSI B16,5115V-1-60 Hz200120120HF US 5000988612011800
MX+MY+MP
HDA US 6000169.960008” ANSI B16,5115V-1-60 Hz200120120HF US 6000C/FC/FC/FC/F
MX+MY+MP
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