The Valve,check, cataloged under National Stock Number 4820-01-413-0479, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Volvo Penta of the Americas Inc. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 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 | 4820-01-413-0479 |
| Primary Part Number | 858256-1 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Volvo Penta of the Americas Inc |
| Status | ACTIVE |
| Mounting Position | VERTICAL |
| Style Designator | STRAIGHT THRU |
| Valve Operation Method | AUTOMATIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4820-01-413-0479 is a Valve,check, manufactured by Volvo Penta of the Americas Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-413-0479 has 3 manufacturer part numbers on file: 858256-1 (Meca Bateau Distribution), 858256-1 (Volvo Penta of the Americas Inc), 858256 (Aktiebolaget Volvo Penta).
1 possible match (shared part number, not a government interchangeability claim): 1560-01-717-6354. Verify interchangeability with system specifications before substitution.
Key specifications for 858256-1: Mounting Position: VERTICAL; Style Designator: STRAIGHT THRU; End Item Identification: VOLVO PENTA ENGINE MODEL TMD41B, TAMD41B, D41B, AND AD41B; Valve Operation Method: AUTOMATIC. 3 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.