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Optimal System Protection

Hankison’s DHW Series Wall Mount Desiccant Air Dryers protect moisture sensitive applications requiring low pressure dew points. Delivers dew points of ISO 8573-1: 2010 Class 1 (-100 ºF, -73 ºC) and Class 2 (-40 ºF, -40 ºC) with flow rates of 7 to 50 scfm (12 to 85 nm³/h).
Unit of Measure

Specifications

Inlet Flow Capacity at -40 ºF (-40 ºC)

 N/A 7 scfm12 nm³/h

Inlet Flow Capacity at -100 ºF (-70 ºC)

 N/A 5 scfm9 nm³/h

Inlet Connection Size

 N/A 0.5 in

Outlet Connection Size

 N/A 0.5 in

Inlet Connection Type

 N/A NPT

Outlet Connection Type

 N/A NPT

Height

 N/A 30.5 in

Width

 N/A 17.52 in

Depth

 N/A 6.69 in

Weight

 N/A 55 lb

Industry Standards/Certifications

 N/A Compressed Air and Gas Institute (CAGI) ISO 8573-1:2010

Series

 N/A DHW

Brands

 N/A Hankison®

Dew Points of ISO 8573-1: 2010 Class 1

 N/A -100 ºF-73 ºC

Dew Points of ISO 8573-1: 2010 Class 2

 N/A -40 ºF-40 ºC

Supreme Craftsmanship

Standard Cord Set Size

 N/A 6 ft1.8 m

Furnished in Cabinet for Easy Wall Mounting

 N/A
  • Fully assembled, piped and wired eases installation.
  • Shipped with desiccant charge.

Front Mounted Control Panel

 N/A
  • Power on light
  • Tower indicator lights
  • On-off switch

Highly Accurate Solid State Timer

 N/A
  • Standard 4 minute cycle time delivers ISO Quality Class 2 pressure dew point.
  • Flow deration delivers ISO Quality Class 1 pressure dew point.

Optional NGF Series Filter Packages

 N/A
  • Grade HF coalescing prefilter captures oil down to 0.008 mg/m³.
  • Grade PF after filter removes solids 1.0 micron and larger.

Technology at a Glance

Technology at a Glance

 N/A
  • Consistent outlet pressure dew points
  • Slow
  • Minimum purge air usage saves energy.
  • Desiccant beds sized to prevent fluidization plus slow and complete regeneration prevents desiccant aging.
  • Heavy-duty purge exhaust muffler for quiet operation.
  • Non-lubricated, soft seated control valves promotes reliable operation.

How it Works

How it Works

 N/A Compressed air enters the dryer and is directed to Tower 1 by valve (A), and then to the dryer outlet through shuttle valve (B). A portion of the dried air is throttled to near atmospheric pressure by means of orifice (C). This extremely dry, low pressure air flows through and regenerates the desiccant in Tower 2 and is exhausted through purge/repressurization valve (D) and exhaust muffler (E) to atmosphere. After a set time, the automatic solid state timer closes purge/ repressurization valve (D) allowing Tower 2 to repressurize slowly. At the end of 2 minutes, valve (A) shifts and purge/repressurization valve (D) reopens.

The main air flow is now dried by Tower 2 while Tower 1 is being regenerated.

Applications

Applications

 N/A Critical applications include labs, hospitals, pharmaceutical manufacturing and other high-tech installations.