The Diaphragm,valve,flat, cataloged under National Stock Number 4820-01-308-5331, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Xomox Corp Sub of Emerson Electric Co. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-308-5331 |
| Primary Part Number | RD6590-03 |
| Item Name | Diaphragm,valve,flat |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Xomox Corp Sub of Emerson Electric Co |
| Status | ACTIVE |
| Material | NICKEL ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| RD6590-03 PRIMARY | Xomox Corp Sub of Emerson Electric Co (USA) |
| RD6731A-D ITEM 6 | Xomox Corp Sub of Emerson Electric Co (USA) |
NSN 4820-01-308-5331 is a Diaphragm,valve,flat, manufactured by Xomox Corp Sub of Emerson Electric Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-308-5331 has 2 manufacturer part numbers on file: RD6590-03 (Xomox Corp Sub of Emerson Electric Co), RD6731A-D ITEM 6 (Xomox Corp Sub of Emerson Electric Co).
Key specifications for RD6590-03: Material: NICKEL ALLOY. 1 specification is 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.