The Diaphragm,valve,flat, cataloged under National Stock Number 4820-00-331-9979, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Diaphragm,valve,flat |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Naval Sea Systems Command (CAGE 53711); Clayton Manufacturing Company (CAGE 12736) |
| Parameter | Value |
|---|---|
| NSN | 4820-00-331-9979 |
| Primary Part Number | S5100-825688DC6 |
| Item Name | Diaphragm,valve,flat |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| S5100-825688DC6 PRIMARY | Naval Sea Systems Command (USA) |
| E2455PC6 | Clayton Manufacturing Company (USA) |
| UH5144 | Clayton Manufacturing Company (USA) |
| Reference | Meaning |
|---|---|
| S5100-825688PC6 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-00-331-9979 is a Diaphragm,valve,flat, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-331-9979 has 3 manufacturer part numbers on file: S5100-825688DC6 (Naval Sea Systems Command), E2455PC6 (Clayton Manufacturing Company), UH5144 (Clayton Manufacturing Company).
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.