The Valve Assembly, cataloged under National Stock Number 4820-01-569-9983, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-569-9983 |
| Item Name | Valve Assembly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| 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 |
| Reference | Meaning |
|---|---|
| 031-146-000 | 3/9 Design control — primary reference Warren Rupp-Houdaille Inc Sub of Houdaille Industries Inc |
| MANUAL 520-222-000 ITEM 1 | 5/9 Secondary reference Warren Rupp-Houdaille Inc Sub of Houdaille Industries Inc |
NSN 4820-01-569-9983 is a Valve Assembly, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-569-9983: Special Features: SSR NAME IS AIR VALVE ASSY; Part Name Assigned by Controlling Agency: AIR VALVE ASSEMBLY WITH MUFFLER; End Item Identification: PUMP, RECIPG AIR DRIVEN DBL DIAPHRAGM. 0 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.