The Valve Assembly,spray, cataloged under National Stock Number 4820-01-090-4950, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Discovery Corporation. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Valve Assembly,spray |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Discovery Corporation (CAGE 64546) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-090-4950 |
| Primary Part Number | 1900594 |
| Item Name | Valve Assembly,spray |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Discovery Corporation |
| Status | ACTIVE |
| 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 |
|---|---|
| 1900594 PRIMARY | Discovery Corporation (USA) |
| Reference | Meaning |
|---|---|
| 153-003-D-062 | 5/9 Secondary reference Beaird Industries Inc. |
NSN 4820-01-090-4950 is a Valve Assembly,spray, manufactured by Discovery Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-090-4950 has 1 manufacturer part number on file: 1900594 (Discovery Corporation).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-118-8058, 4820-01-433-8207. Verify interchangeability with system specifications before substitution.
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.