The Cap,valve, cataloged under National Stock Number 4820-01-191-8566, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Donaldson Company, Inc.. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-191-8566 |
| Primary Part Number | 422936-3 |
| Item Name | Cap,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Donaldson Company, Inc. |
| Status | ACTIVE |
| Material | ALUMINUM ALLOY |
| 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 |
|---|---|
| 422936-3 PRIMARY | Donaldson Company, Inc. (USA) |
| 422673 PIECE 7 | Donaldson Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 422936 | D/9 Drawing number reference only Donaldson Company, Inc. |
NSN 4820-01-191-8566 is a Cap,valve, manufactured by Donaldson Company, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-191-8566 has 2 manufacturer part numbers on file: 422936-3 (Donaldson Company, Inc.), 422673 PIECE 7 (Donaldson Company, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5996-01-476-1136. Verify interchangeability with system specifications before substitution.
Key specifications for 422936-3: Special Features: RIGHT HAND; Material: ALUMINUM ALLOY. 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.