The Dehydrator Unit,nonreactivating, cataloged under National Stock Number 4440-01-440-4081, is classified within Federal Supply Class 4440 (Driers, Dehydrators, and Anhydrators) of the Furnace, Steam, Drying, Nuclear Reactors group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4440-01-440-4081 |
| Item Name | Dehydrator Unit,nonreactivating |
| FSC / FSG | 4440 / 44 — Driers, Dehydrators, and Anhydrators |
| Status | ACTIVE |
| Body Overall Length | 16.840 INCHES NOMINAL IN |
| Accessory Components and Quantity | LOW PRESSURE ALARM 1; PRESSURE GAUGE 1; TOTAL RUN TIME METER 1; SINGLE-LINE INSTALLATION KIT 1 |
| Body Overall Height | 12.220 INCHES NOMINAL IN |
| Body Overall Width | 10.250 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MT300-81215 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| MT300-81015 | 5/9 Secondary reference U.S. Government activity |
| MT500A-81015 | 5/9 Secondary reference U.S. Government activity |
| MT300-101 | 5/9 Secondary reference U.S. Government activity |
| MT500D-81015 | 3/2 Design control — primary reference U.S. Government activity |
| MT500B-81015 | 5/9 Secondary reference U.S. Government activity |
NSN 4440-01-440-4081 is a Dehydrator Unit,nonreactivating, classified under FSC 4440, Driers, Dehydrators, and Anhydrators. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4440-01-589-1916. Verify interchangeability with system specifications before substitution.
Key specifications for 4440-01-440-4081: Body Overall Length: 16.840 INCHES NOMINAL IN; Accessory Components and Quantity: LOW PRESSURE ALARM 1; PRESSURE GAUGE 1; TOTAL RUN TIME METER 1; SINGLE-LINE INSTALLATION KIT 1; Special Features: MDEHYDRATOR IS EQUIPPED WITH UNIQUE UNI-MOUNT SYSTEM ALLOWING FOR RACK, WALL OR FREE-STANDING MOUNTING; INSTALLATION KIT CONSISTS OF 20FT 3/8" POLY TUBE, A SHUT-OFF VALVE AND A 1/8"NPT 3/8" POLYETHYLENE TUBE ELBOW FT; Body Overall Height: 12.220 INCHES NOMINAL IN. 4 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.