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DHB Series 500-4300 SCFM
Blower Purge Desiccant Air Dryers

FS-Curtis’ DHB blower purge desiccant dryers improve air system efficiency by the use of a dedicated axial blower, instead of a percentage of dehydrated purge air, to regenerate the off-line desiccant tower. ISO 8573.1 Class 2 dew point performance is guaranteed. DHB dryers do not use compressed air aszz purge air and thus are 100% efficient at delivering full supply-side compressor capacity.

Benefits & Features:
  • Industrial level high capacity blowers operate efficiently and quietly
  • Low-watt density heater saves energy and prevents premature desiccant aging
  • Premium grade desiccant beads enhance surface area and have high crush strength
  • NEMA4 rated electrical enclosure
  • Optional pre-mounted filtration package increases lifetime of desiccant and avoids system contamination

Models: DHB500, DHB600, DHB750, DHB900, DHB1050, DHB1300, DHB1500, DHB1800, DHB2200, DHB2600, DHB3200, DHB3600, DHB4300

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Quantity
Add to
Quote
Model
Inlet
Flow2
Power
Supply
Inlet/Outlet
Dimensions
Weight
@ 100 psig
SCFM
V/ph/Hz
NPT Male (in.)
L in.
W in.
H in.
Lbs.
DHB500
500
460/3/60
2"
105"
53"
70"
1866
DHB600
600
460/3/60
2"
108"
55"
71"
2111
DHB750
750
460/3/60
3" FLG
114"
60"
83"
2456
DHB900
900
460/3/60
3" FLG
114"
60"
83"
2472
DHB1050
1,050
460/3/60
3" FLG
113"
64"
84"
2981
DHB1300
1,300
460/3/60
3" FLG
118"
66"
85"
3576
DHB1500
1,500
460/3/60
3" FLG
116"
80"
93"
5359
DHB1800
1,800
460/3/60
3" FLG
116"
80"
93"
5359
DHB2200
2,200
460/3/60
4" FLG
124"
85"
104"
8018
DHB2600
2,600
460/3/60
4" FLG
124"
85"
104"
8123
DHB3200
3,200
460/3/60
6" FLG
121"
97"
117"
9333
DHB3600
3,600
460/3/60
6" FLG
128"
97"
117"
9833
DHB4300
4,300
460/3/60
6" FLG
124"
105"
130"
12350
1Inlet flow - Conditions for rating above dryers are: compressed air at dryer inlet: 100°F inlet 100 psig inlet pressure; 100% relative humidity, 100°F ambient temperature, and 5 psi pressure drop.
  
DHP Series Features:
  • • Industrial level high capacity blowers operate efficiently and quietly
  • • Low-watt density heater saves energy and prevents premature desiccant aging
  • • Premium grade desiccant beads enhance surface area and have high crush strength
  • • NEMA4 rated electrical enclosure
  • • Optional pre-mounted filtration package increases lifetime of desiccant and avoids system contamination
  
BLOWER PURGE REGENERATION

Filtered compressed air enters on-line desiccant-filled, drying Tower 1 through valve (A). Up-flow drying enables the desiccant to strip moisture from the airstream. Clean, dry compressed air exits through (E) to feed the air system. Tower 2 (shown in regeneration mode) valve (B) closed, depressurizes to atmosphere through muffler (C). Valves (D & F) open and the heater turns on. The highefficiency blower draws ambient air and feeds it through the heater. The ambient airstream passes through valve (F) and flows downward through the moist desiccant in Tower 2, collecting water vapor before exiting valve (D). Once the desiccant is fully desorbed, the heater turns off. Valves (F & D) close and Tower 2 is re-pressurized. At a fixed time interval, valve (B) will open and Tower 2 will be placed on-line to dry the airstream and valve (A) will close. Operations will switch and Tower 1 will be regenerated.

DHB Series How it works

Options
  • pre-mounted filtration package - increases lifetime of desiccant and avoids system contamination
  • Opional 575/3/60 Power Supply
  • EMS w/ FA Supercharger

Accessories
F0 Package - Piped with no valves
F3 Package - Piped with 3 valves By-pass
Replacement Desiccant - Premium grade activated alumina desiccant weight is for two towers.