The Seat,valve, cataloged under National Stock Number 4820-00-633-1985, 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 8 specifications, 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-633-1985 |
| Primary Part Number | 96822 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.165 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN |
| Flange Diameter | 0.862 INCHES MINIMUM AND 0.864 INCHES MAXIMUM IN |
| Body Outside Diameter | 0.749 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN |
| Style Designator | PLAIN FLANGED |
| Body Inside Diameter | 0.155 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN |
| Under Flange Height | 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Seating Surface Shape | FLAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 96822 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
NSN 4820-00-633-1985 is a Seat,valve, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-633-1985 has 1 manufacturer part number on file: 96822 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
1 possible match (shared part number, not a government interchangeability claim): 7510-01-469-7149. Verify interchangeability with system specifications before substitution.
Key specifications for 96822: Flange Seat to Disk End Height: 0.165 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN; Flange Diameter: 0.862 INCHES MINIMUM AND 0.864 INCHES MAXIMUM IN; Body Outside Diameter: 0.749 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN; Style Designator: PLAIN FLANGED. 8 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.