The Valve,check, cataloged under National Stock Number 4820-01-263-0340, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-263-0340 |
| Primary Part Number | 793237-2 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| Supplementary Features | PACER SPECIAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 793237-2 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
| DAA3284P001-324 | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
| Reference | Meaning |
|---|---|
| 793237-1 | 5/9 Secondary reference Hamilton Sundstrand Corporation Dba Collins Aerospace |
| 256094-1 | 5/9 Secondary reference U.S. Government activity |
| 2S6094-1 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-263-0340 is a Valve,check, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-263-0340 has 2 manufacturer part numbers on file: 793237-2 (Hamilton Sundstrand Corporation Dba Collins Aerospace), DAA3284P001-324 (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems).
Key specifications for 793237-2: Supplementary Features: PACER SPECIAL. 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.
NSN 4820-01-263-0340 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.