The Seat,valve, cataloged under National Stock Number 4820-01-441-9073, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Fitzhugh Clifton Dba Hyperox Technologies. Government technical data includes 2 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-441-9073 |
| Primary Part Number | 803-4384536-1XXX-85 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Fitzhugh Clifton Dba Hyperox Technologies |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH NAVAL INVENTORY CONTROL POINT, MECHANICSBURG, ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 803-4384536-1XXX-85 | Fitzhugh Clifton Dba Hyperox Technologies (USA) |
| 803-4384536-1XXX-85 | Fluidyne Corporation Dba Fluidyne Corp (USA) |
| Reference | Meaning |
|---|---|
| 803-4384536-1XXX-85 | 3/1 Design control — primary reference U.S. Government activity |
NSN 4820-01-441-9073 is a Seat,valve, manufactured by Fitzhugh Clifton Dba Hyperox Technologies, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-441-9073 has 2 manufacturer part numbers on file: 803-4384536-1XXX-85 (Fitzhugh Clifton Dba Hyperox Technologies), 803-4384536-1XXX-85 (Fluidyne Corporation Dba Fluidyne Corp).
Key specifications for 803-4384536-1XXX-85: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVAL INVENTORY CONTROL POINT, MECHANICSBURG, ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS. 2 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.
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.