The Valve,linear,directional Control, cataloged under National Stock Number 4820-01-544-9644, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-544-9644 |
| Item Name | Valve,linear,directional Control |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Maximum Operating Temp and Media for Which Designed | 225.0 FAHRENHEIT OIL AND 225.0 FAHRENHEIT HYDRAULIC FLUID, PETROLEUM BASE DEGF |
| Operating Pressure and Type | 3000.0 POUNDS PER SQUARE INCH (PSI) OIL MAXIMUM REQUIRED AND 3000.0 POUNDS PER SQUARE INCH (PSI) HYDRAULIC FLUID, PETROLEUM BASE MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS |
| Connection Type | THREADED EXTERNAL BOSS |
| End Connection Quantity | 4 |
| Nominal Thread Size | 0.312 INCHES IN |
| Thread Class | 2B |
| Thread Quantity Per Inch | 18 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Valve Discharge Flow Rate | 7.0 GALLONS PER MINUTE |
| Valve Operation Method | MANUAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 7010394 | 7/2 Vendor item drawing reference Marine Corps Systems Command Program Manager Assault Amphibious Vehicle |
| 6901R3HC3-NF | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-544-9644 is a Valve,linear,directional Control, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-544-9644: Maximum Operating Temp and Media for Which Designed: 225.0 FAHRENHEIT OIL AND 225.0 FAHRENHEIT HYDRAULIC FLUID, PETROLEUM BASE DEGF; Operating Pressure and Type: 3000.0 POUNDS PER SQUARE INCH (PSI) OIL MAXIMUM REQUIRED AND 3000.0 POUNDS PER SQUARE INCH (PSI) HYDRAULIC FLUID, PETROLEUM BASE MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS; Connection Type: THREADED EXTERNAL BOSS; End Connection Quantity: 4. 10 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.