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
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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.
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.