The Valve,check, cataloged under National Stock Number 4820-01-595-9074, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Engineered Machined Products Inc. The record lists 2 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.
| Item Name | Valve,check |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Engineered Machined Products Inc (CAGE 1HUX0); Cummins Power South, Llc (CAGE 06MF4) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-595-9074 |
| Primary Part Number | 3170805 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Engineered Machined Products 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 |
NSN 4820-01-595-9074 is a Valve,check, manufactured by Engineered Machined Products Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-595-9074 has 2 manufacturer part numbers on file: 3170805 (Engineered Machined Products Inc), 218364-01 (Cummins Power South, Llc).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-620-9725. Verify interchangeability with system specifications before substitution.
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.