The Drier,air-Gas,desiccant, cataloged under National Stock Number 4440-01-673-5945, is classified within Federal Supply Class 4440 (Driers, Dehydrators, and Anhydrators) of the Furnace, Steam, Drying, Nuclear Reactors group. The manufacturer of record is Atlas Copco Compressors Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4440-01-673-5945 |
| Primary Part Number | DDP45+ |
| Item Name | Drier,air-Gas,desiccant |
| FSC / FSG | 4440 / 44 — Driers, Dehydrators, and Anhydrators |
| Manufacturer | Atlas Copco Compressors Inc |
| Status | ACTIVE |
| Pressure Rating | ERR-060 |
| 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 |
|---|---|
| DDP45+ PRIMARY | Atlas Copco Compressors Inc (USA) |
| Reference | Meaning |
|---|---|
| 11B4541025-2 | 7/2 Vendor item drawing reference Devcom Chemical Biological Center Dba Chemical Biological Center Div U.s. Dept of Army |
| DDP50+ | 5/9 Secondary reference Atlas Copco Compressors Inc |
NSN 4440-01-673-5945 is a Drier,air-Gas,desiccant, manufactured by Atlas Copco Compressors Inc, classified under FSC 4440, Driers, Dehydrators, and Anhydrators. Status: active.
NSN 4440-01-673-5945 has 1 manufacturer part number on file: DDP45+ (Atlas Copco Compressors Inc).
Key specifications for DDP45+: Overall Height: 13.0 INCHES NOMINAL IN; Overall Length: 3.5 INCHES NOMINAL IN; Overall Width: 2.5 INCHES NOMINAL IN; Pressure Rating: ERR-060. 1 specification is 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.