The Valve,check, cataloged under National Stock Number 4820-01-218-3299, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Valve,check |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc (CAGE 0ASY6) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-218-3299 |
| Primary Part Number | M308-4 AND MPL1142 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc |
| 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 |
|---|---|
| M308-4 AND MPL1142 PRIMARY | Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc (USA) |
| Reference | Meaning |
|---|---|
| 308-4 AND PL-2104 | 3/2 Design control — primary reference U.S. Government activity |
| M308-4 AND MPL1142 | 5/9 Secondary reference Derbyshire Machine & Tool Co |
| B-5176 | D/9 Drawing number reference only U.S. Government activity |
| B-5176 AND PL-2104 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-218-3299 is a Valve,check, manufactured by Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-218-3299 has 1 manufacturer part number on file: M308-4 AND MPL1142 (Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc).
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.