The Diaphragm,valve,flat, cataloged under National Stock Number 4820-01-549-5701, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Defense Maritime Solutions, Inc.. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | Defense Maritime Solutions, Inc. (CAGE 0EYA6) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-549-5701 |
| Primary Part Number | US75818-01-2-1 |
| Item Name | Diaphragm,valve,flat |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Defense Maritime Solutions, Inc. |
| Status | ACTIVE |
| 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 |
|---|---|
| US75818-01-2-1 PRIMARY | Defense Maritime Solutions, Inc. (USA) |
| Reference | Meaning |
|---|---|
| US75818-01 | D/9 Drawing number reference only Defense Maritime Solutions, Inc. |
NSN 4820-01-549-5701 is a Diaphragm,valve,flat, manufactured by Defense Maritime Solutions, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-549-5701 has 1 manufacturer part number on file: US75818-01-2-1 (Defense Maritime Solutions, Inc.).
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.