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DHP Series 300-3200 SCFM
Heated Purge Desiccant Air Dryers

FS-Curtis’ externally heated purge desiccant dryers offer consistent dew point performance and are equipped with our advanced purge booster. DHP Series dryers consume less dried compressed air volume for regeneration purpose by the use of a low-watt density heater. Reduce air loss to align supply-side equipment with demand-side requirements to optimize your air system.

Benefits & Features:
  • 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: DHP300, DHP400, DHP500, DHP600, DHP750, DHP900, DHP1050, DHP1300, DHP1500, DHP1800, DHP2200, DHP2600, DHP3200

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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.
DHP300
300
460/3/60
1½"
98"
48"
43"
1400
DHP400
400
460/3/60
1½"
105"
53"
50"
1800
DHP500
500
460/3/60
2"
105"
53"
50"
1800
DHP600
600
460/3/60
2"
108"
55"
50"
2000
DHP750
750
460/3/60
3" FLG
114"
60"
62"
2400
DHP900
900
460/3/60
3" FLG
114"
60"
62"
2400
DHP1050
1,050
460/3/60
3" FLG
113"
64"
62"
2900
DHP1300
1,300
460/3/60
3" FLG
118"
66"
62"
3400
DHP1500
1,500
460/3/60
3" FLG
116"
80"
62"
5100
DHP1800
1,800
460/3/60
3" FLG
116"
80"
62"
5100
DHP2200
2,200
460/3/60
4" FLG
124"
85"
64"
7800
DHP2600
2,600
460/3/60
4" FLG
124"
85"
64"
7800
DHP3200
3,200
460/3/60
4" FLG
121"
97"
64"
9000
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:
  • • 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
  
HEATED PURGE REGENERATION
Moist, filtered compressed air enters the pressurized on-line desiccant-filled drying Tower 1 through valve (A). Up-flow drying enables the desiccant to strip the air stream of moisture. Clean, dry compressed air exits through valve (E) to feed the air system. Tower 2 (when in regeneration mode) closes valve (B), then depressurizes to atmosphere through muffler (C). Valves (D & G) open and the heater turns on. A portion of dry compressed air (purge air) is diverted before exiting (E) and passes through the heater. Hot dry purge air desorbs the moisture from the desiccant as it flows down through Tower 2 to exit at valve (D). Once desorbed, the heater turns off and cool dry purge air continues to pass until the desiccant bed is cooled. Finally, valve (D) closes 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 bed and valves (A & D) will close. Operations will switch and Tower 1 will be regenerated.
DHP Series How it works

Options
  • F0 Package - Piped with no valves
  • F3 Package - Piped with 3 valves By-pass
  • Explosion Proof