The Dehumidifier,desiccant,electric, cataloged under National Stock Number 4440-00-778-0397, is classified within Federal Supply Class 4440 (Driers, Dehydrators, and Anhydrators) of the Furnace, Steam, Drying, Nuclear Reactors group. The manufacturer of record is Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4440-00-778-0397 |
| Primary Part Number | HADS-100-205 |
| Item Name | Dehumidifier,desiccant,electric |
| FSC / FSG | 4440 / 44 — Driers, Dehydrators, and Anhydrators |
| Manufacturer | Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. |
| Status | ACTIVE |
| Desiccant Bed Quantity | 2 |
| Phase | SINGLE |
| Frequency in Hertz | 400.0 |
| Current Type | AC/DC |
| Dehumidified Air Delivery | 0.0232 CUBIC FEET PER MINUTE NOMINAL |
| Wattage Rating in Watts | 120.0 |
| Water Weight Removed Per Operational Hour | 0.300 POUNDS LBS |
| Input Relative Humidity in Percent | 90.0 |
| Voltage in Volts | 120.0 |
| Voltage in Volts | 28.0 |
| Desiccant Type | SILICA GEL |
| Dehumidified Air Delivery Pressure | 300.000 INCHES OF WATER NOMINAL IN |
| Input Temp Rating | -40.0 FAHRENHEIT DEGF |
| Direct Current Rating in Amps | 0.75 |
| Usage Design | FOR DRYING AIR FOR PRESSURIZING A WAVE GUIDE SECTION IN GROUND RADAR EQUIPMENT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 9150649 | Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. (USA) |
| HADS-100-205 PRIMARY | Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| GA53627L1 | 5/9 Secondary reference American Telephone and Telegraph Co |
| 9150649 | 5/1 Secondary reference Us Army Aviation and Missile Command |
| ADS100-205 | 5/9 Secondary reference Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. |
| 9150649 | 5/9 Secondary reference Howden Fluid Systems |
| ADS100-205 | 5/9 Secondary reference Howden Fluid Systems |
| GA53627L1 | 5/9 Secondary reference At and T Corp |
NSN 4440-00-778-0397 is a Dehumidifier,desiccant,electric, manufactured by Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc., classified under FSC 4440, Driers, Dehydrators, and Anhydrators. Status: active.
NSN 4440-00-778-0397 has 2 manufacturer part numbers on file: 9150649 (Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.), HADS-100-205 (Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.).
Key specifications for HADS-100-205: Overall Height: 6.500 INCHES NOMINAL IN; Desiccant Bed Quantity: 2; Phase: SINGLE; Frequency in Hertz: 400.0. 15 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.