The Seat,valve, cataloged under National Stock Number 4820-00-941-6029, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-941-6029 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.070 INCHES MINIMUM AND 0.071 INCHES MAXIMUM IN |
| Flange Diameter | 0.310 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Body Outside Diameter | 0.200 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN |
| Style Designator | PLAIN FLANGED |
| Body Inside Diameter | 0.093 INCHES NOMINAL IN |
| Seat Radius | 0.002 INCHES NOMINAL IN |
| Under Flange Height | 0.068 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN |
| Material | PLASTIC POLYTRIFLUOROCHLOROETHYLENE OVERALL |
| Seating Surface Shape | RADIAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 156252 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-00-941-6029 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5305-01-165-2336, 5310-01-605-3700. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-00-941-6029: Flange Seat to Disk End Height: 0.070 INCHES MINIMUM AND 0.071 INCHES MAXIMUM IN; Flange Diameter: 0.310 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN; Body Outside Diameter: 0.200 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN; Style Designator: PLAIN FLANGED. 9 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.