The Seat,valve, cataloged under National Stock Number 4820-00-362-9466, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-362-9466 |
| Primary Part Number | 1424A |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.577 INCHES MINIMUM AND 0.597 INCHES MAXIMUM IN |
| Flange Diameter | 3.370 INCHES MINIMUM AND 3.375 INCHES MAXIMUM IN |
| Body Outside Diameter | 3.107 INCHES MINIMUM AND 3.117 INCHES MAXIMUM IN |
| Style Designator | PLAIN FLANGED |
| Body Inside Diameter | 0.500 INCHES NOMINAL IN |
| Under Flange Height | 0.265 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN |
| Material | IRON 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 |
|---|---|
| 1424A PRIMARY | Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor (USA) |
| Reference | Meaning |
|---|---|
| 1424 | 5/9 Secondary reference Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor |
NSN 4820-00-362-9466 is a Seat,valve, manufactured by Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-362-9466 has 1 manufacturer part number on file: 1424A (Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor).
2 possible matches (shared part number, not a government interchangeability claim): 6625-00-731-7404, 4820-01-620-5315. Verify interchangeability with system specifications before substitution.
Key specifications for 1424A: Flange Seat to Disk End Height: 0.577 INCHES MINIMUM AND 0.597 INCHES MAXIMUM IN; Flange Diameter: 3.370 INCHES MINIMUM AND 3.375 INCHES MAXIMUM IN; Body Outside Diameter: 3.107 INCHES MINIMUM AND 3.117 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.