The Disk,valve, cataloged under National Stock Number 4820-01-446-3229, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-446-3229 |
| Primary Part Number | 1FA1305527 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport |
| Status | ACTIVE |
| Material | STEEL |
| 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 |
|---|---|
| 1FA1305527 PRIMARY | Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport (USA) |
| 1FA1305527 | Triumph Actuation Systems Llc Div Triumph Actuation Systems - Clemmons (USA) |
NSN 4820-01-446-3229 is a Disk,valve, manufactured by Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-446-3229 has 2 manufacturer part numbers on file: 1FA1305527 (Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport), 1FA1305527 (Triumph Actuation Systems Llc Div Triumph Actuation Systems - Clemmons).
Key specifications for 1FA1305527: Special Features: FOR LINEAR DIRECTIONAL CONTROL VALVE; SQUARE HOLE FOR VALVE SLIDE; End Item Identification: 1520-01-088-3669; HELICOPTER CHINOOK, CH47; Material: STEEL. 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 4820-01-446-3229 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.