The Valve,check, cataloged under National Stock Number 4820-01-412-3543, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Danfoss Fluid Power Inc Easley Opn. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-412-3543 |
| Primary Part Number | 3C12-3W-3 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Danfoss Fluid Power Inc Easley Opn |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | LEFT-HAND ALL ENDS |
| Nominal Thread Size | 0.375 INCHES ALL ENDS IN |
| Disk Loading Method | SPRING |
| Material | STEEL BODY |
| Thread Series Designator | BSP.PL ALL ENDS |
| Opening Pressure Setting | 3.0 POUNDS PER SQUARE INCH LBS |
| 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 |
|---|---|
| 149130 FIND 18 | M.e.p. Marine Equipment Pellegrini Srl (ITA) |
| 3C12-3W-3 PRIMARY | Danfoss Fluid Power Inc Easley Opn (USA) |
| 149069 FIND 41 | M.e.p. Marine Equipment Pellegrini Srl (ITA) |
| 56913021 | M.e.p. Marine Equipment Pellegrini Srl (ITA) |
| 149458 FIND 18 | M.e.p. Marine Equipment Pellegrini Srl (ITA) |
NSN 4820-01-412-3543 is a Valve,check, manufactured by Danfoss Fluid Power Inc Easley Opn, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-412-3543 has 5 manufacturer part numbers on file: 149130 FIND 18 (M.e.p. Marine Equipment Pellegrini Srl), 3C12-3W-3 (Danfoss Fluid Power Inc Easley Opn), 149069 FIND 41 (M.e.p. Marine Equipment Pellegrini Srl), 56913021 (M.e.p. Marine Equipment Pellegrini Srl), 149458 FIND 18 (M.e.p. Marine Equipment Pellegrini Srl).
Key specifications for 3C12-3W-3: Flow Control Device: POPPET; Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS; Mounting Position: HORIZONTAL OR VERTICAL; Connection Type: THREADED INTERNAL PIPE ALL ENDS. 13 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.