The Seat,valve, cataloged under National Stock Number 4820-00-200-9140, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-00-200-9140 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.310 INCHES NOMINAL IN |
| Flange Diameter | 1.750 INCHES NOMINAL IN |
| Body Outside Diameter | 1.335 INCHES MINIMUM AND 1.360 INCHES MAXIMUM IN |
| Style Designator | PLAIN FLANGED |
| Body Inside Diameter | 1.000 INCHES NOMINAL IN |
| Under Flange Height | 0.130 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Seating Surface Shape | FLAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| Q4600-17-4 | C/1 Advisory reference — outside the item-of-supply concept Testek Llc Dba Testek Solutions |
| Q4600-17-4 | 3/9 Design control — primary reference Aai Corporation Div Mississippi Operations |
NSN 4820-00-200-9140 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-00-200-9140: Flange Seat to Disk End Height: 0.310 INCHES NOMINAL IN; Flange Diameter: 1.750 INCHES NOMINAL IN; Body Outside Diameter: 1.335 INCHES MINIMUM AND 1.360 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.
NSN 4820-00-200-9140 has DEMIL Code B. 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.