The Valve,check, cataloged under National Stock Number 4820-01-478-1504, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Triumph Actuation Systems - Connecticut, Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-478-1504 |
| Primary Part Number | 4308340-1 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Triumph Actuation Systems - Connecticut, Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 4308340-1 PRIMARY | Triumph Actuation Systems - Connecticut, Llc (USA) |
NSN 4820-01-478-1504 is a Valve,check, manufactured by Triumph Actuation Systems - Connecticut, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-478-1504 has 1 manufacturer part number on file: 4308340-1 (Triumph Actuation Systems - Connecticut, Llc).
Key specifications for 4308340-1: End Item Identification: FIGHTER, AIRCRAFT-FIRST. 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.
NSN 4820-01-478-1504 has DEMIL Code B. 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.