The Seat,valve, cataloged under National Stock Number 4820-01-228-9617, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-228-9617 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.085 INCHES NOMINAL IN |
| Flange Diameter | 0.990 INCHES MINIMUM AND 0.995 INCHES MAXIMUM IN |
| Body Outside Diameter | 0.710 INCHES NOMINAL IN |
| Criticality Code Justification | ZZZY |
| Style Designator | PLAIN FLANGED |
| Body Inside Diameter | 0.422 INCHES MINIMUM AND 0.452 INCHES MAXIMUM IN |
| Under Flange Height | 0.080 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE OVERALL |
| Seat Angle in Deg | 15.233 MINIMUM AND 17.233 MAXIMUM |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Seating Surface Shape | ANGULAR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL F — Mutilate — Cut |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | C |
| Reference | Meaning |
|---|---|
| 803-5001003-X1X1-04 SPCLN | 5/1 Secondary reference Naval Sea Systems Command |
| 803-5001003-X1X1-04 | 3/1 Design control — primary reference Naval Sea Systems Command |
NSN 4820-01-228-9617 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-228-9617: Flange Seat to Disk End Height: 0.085 INCHES NOMINAL IN; Flange Diameter: 0.990 INCHES MINIMUM AND 0.995 INCHES MAXIMUM IN; Body Outside Diameter: 0.710 INCHES NOMINAL IN; Criticality Code Justification: ZZZY. 11 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.
NSN 4820-01-228-9617 has DEMIL Code F. Demilitarization may be required before disposal or transfer to non-military entities.
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.