The Diaphragm,actuator Valve,special, cataloged under National Stock Number 4820-01-523-3274, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Evac North America Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-523-3274 |
| Primary Part Number | 5774400 |
| Item Name | Diaphragm,actuator Valve,special |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Evac North America Inc |
| Status | ACTIVE |
| Style Designator | SPECIAL SHAPED |
| 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 |
|---|---|
| 5774400 | Qua-Vac B.v. (NLD) |
| 57744 00 | Evac Oy (FIN) |
| 3242231 | Bae Systems Australia Defence Pty Ltd (AUS) |
| 5774400 PRIMARY | Evac North America Inc (USA) |
| 57744 00 | Transvac Systems (GBR) |
| Reference | Meaning |
|---|---|
| 57744 00 | 5/9 Secondary reference Evac Oy |
| 5774400 | 5/9 Secondary reference Envirovac Inc Dba Monogram Systems-Rockford Div |
| 10333354 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 4820-01-523-3274 is a Diaphragm,actuator Valve,special, manufactured by Evac North America Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-523-3274 has 5 manufacturer part numbers on file: 5774400 (Qua-Vac B.v.), 57744 00 (Evac Oy), 3242231 (Bae Systems Australia Defence Pty Ltd), 5774400 (Evac North America Inc), 57744 00 (Transvac Systems).
1 possible match (shared part number, not a government interchangeability claim): 4810-01-669-8760. Verify interchangeability with system specifications before substitution.
Key specifications for 5774400: Style Designator: SPECIAL SHAPED; End Item Identification: VACUUM TOILET ASSEMBLY W/AUTOFLUSH. 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.