The Valve,flapper, cataloged under National Stock Number 4810-01-475-8280, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-01-475-8280 |
| Item Name | Valve,flapper |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Status | ACTIVE |
| Overall Diameter | 18.000 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 110WPB259-003 ASSEMBLY H | 3/2 Design control — primary reference U.S. Government activity |
NSN 4810-01-475-8280 is a Valve,flapper, classified under FSC 4810, Valves, Powered. Status: active.
Key specifications for 4810-01-475-8280: Overall Diameter: 18.000 INCHES NOMINAL IN; Overall Length: 8.375 INCHES NOMINAL IN; Special Features: PORT; OVERALL THICKNESS 0.625 INCHES NOMINAL; MOUNTING HOLE QUANTITY 24; MOUNTING HOLE DIAMETER 0.625 INCHES NOMINAL; ITEM INCLUDES VALVE AND UPPER AND LOWER GASKETS IN; End Item Identification: ONBOARD 110 FT WPB "C" CLASS COAST GUARD VESSELS FT. 2 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.