The Valve,check, cataloged under National Stock Number 4820-01-725-3203, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Md Helicopters Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-725-3203 |
| Primary Part Number | 1741375 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Md Helicopters Inc |
| Status | ACTIVE |
| Nondefinitive Spec/std Data | 0.01LBS WEIGHT LBS |
| 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 |
|---|---|
| 1741375 | Md Helicopters Inc (USA) |
| Reference | Meaning |
|---|---|
| 1741375 | 3/2 Design control — primary reference U.S. Government activity |
| 724155-1 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-725-3203 is a Valve,check, manufactured by Md Helicopters Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-725-3203 has 1 manufacturer part number on file: 1741375 (Md Helicopters Inc).
Key specifications for 1741375: Nondefinitive Spec/std Data: 0.01LBS WEIGHT LBS; Special Features: LENGTH IS 5.0 INCHES; WIDTH IS 2.25; HEIGHT IS 2.25; ITEM DESCRIPTION: CHECK VALVE ON THE ENGINE OIL COOLER IN; Part Name Assigned by Controlling Agency: CHECK VALVE ENGINE OIL COOLER. 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.