The Seat,valve, cataloged under National Stock Number 4820-00-925-4731, 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 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-925-4731 |
| Primary Part Number | 22628 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| Body Outside Diameter | 0.219 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN |
| Style Designator | PLAIN |
| Body Inside Diameter | 0.028 INCHES MINIMUM AND 0.029 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| 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 |
|---|---|
| 22628 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
| Reference | Meaning |
|---|---|
| 22628 | 5/9 Secondary reference United Technologies Corp Hamilton Sundstrand Corp |
NSN 4820-00-925-4731 is a Seat,valve, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-925-4731 has 1 manufacturer part number on file: 22628 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
2 possible matches (shared part number, not a government interchangeability claim): 5315-01-137-7870, 4730-01-157-3014. Verify interchangeability with system specifications before substitution.
Key specifications for 22628: Overall Height: 0.537 INCHES MINIMUM AND 0.539 INCHES MAXIMUM IN; Body Outside Diameter: 0.219 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN; Style Designator: PLAIN; Body Inside Diameter: 0.028 INCHES MINIMUM AND 0.029 INCHES MAXIMUM IN. 6 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.