The Valve,safety Relief, cataloged under National Stock Number 4820-01-280-3948, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Mission Systems Wimborne Limited Div Cobham Mission Systems Wimborne Ltd. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-280-3948 |
| Primary Part Number | DGMC-3-PT-FW-30 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Mission Systems Wimborne Limited Div Cobham Mission Systems Wimborne Ltd |
| Status | ACTIVE |
| Operating Pressure | 3600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Adjustable Pressure Range | +725.0 TO 3600.0 POUNDS PER SQUARE INCH LBS |
| Valve Discharge Flow Rate | 5.0 GALLONS PER MINUTE |
| 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 |
| Part Number | Manufacturer |
|---|---|
| DGMC-3-PT-FW-30 | Mission Systems Wimborne Limited Div Cobham Mission Systems Wimborne Ltd (GBR) |
| DGMC-3-PT-FW-30 | Eaton Aerospace, Llc Dba Jackson South (USA) |
| Reference | Meaning |
|---|---|
| 99AD1679-63-101 | 5/9 Secondary reference Air-Draulics Co |
| DGMC-3PT-FW-30 | 3/9 Design control — primary reference Vickers Inc |
NSN 4820-01-280-3948 is a Valve,safety Relief, manufactured by Mission Systems Wimborne Limited Div Cobham Mission Systems Wimborne Ltd, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-280-3948 has 2 manufacturer part numbers on file: DGMC-3-PT-FW-30 (Mission Systems Wimborne Limited Div Cobham Mission Systems Wimborne Ltd), DGMC-3-PT-FW-30 (Eaton Aerospace, Llc Dba Jackson South).
Key specifications for DGMC-3-PT-FW-30: Operating Pressure: 3600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Adjustable Pressure Range: +725.0 TO 3600.0 POUNDS PER SQUARE INCH LBS; Valve Discharge Flow Rate: 5.0 GALLONS PER MINUTE; Valve Operation Method: AUTOMATIC. 4 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.