The Valve,check, cataloged under National Stock Number 4820-01-498-4818, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Amw Cuyuna Engine Co. Inc Dba Two Stroke International. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Item Name | Valve,check |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Amw Cuyuna Engine Co. Inc Dba Two Stroke International (CAGE 2X580) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-498-4818 |
| Primary Part Number | 1958 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Amw Cuyuna Engine Co. Inc Dba Two Stroke International |
| 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 |
|---|---|
| 1958 PRIMARY | Amw Cuyuna Engine Co. Inc Dba Two Stroke International (USA) |
NSN 4820-01-498-4818 is a Valve,check, manufactured by Amw Cuyuna Engine Co. Inc Dba Two Stroke International, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-498-4818 has 1 manufacturer part number on file: 1958 (Amw Cuyuna Engine Co. Inc Dba Two Stroke International).
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.