The Restrictor Valve Ay, cataloged under National Stock Number 4820-01-588-1726, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace. Government technical data includes 1 specification, cited from the U.S. Government catalog. 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 | 4820-01-588-1726 |
| Primary Part Number | 21848-001 |
| Item Name | Restrictor Valve Ay |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace |
| Status | ACTIVE |
| Criticality Code Justification | FEAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 21848-001 PRIMARY | Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA) |
NSN 4820-01-588-1726 is a Restrictor Valve Ay, manufactured by Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-588-1726 has 1 manufacturer part number on file: 21848-001 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace).
Key specifications for 21848-001: Criticality Code Justification: FEAT; Special Features: A PART, ASSEMBLY, OR SYSTEM IDENTIFIED AS ESSENTIAL TO WEAPON SYSTEM PERFORMANCE OR OPERATION TO PRESERVE LIFE AND SAFETY OF PERSONNEL. 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 4820-01-588-1726 has DEMIL Code D. 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.