The Valve,calibrated Flow, cataloged under National Stock Number 4820-01-019-4797, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics Div Gear Pump Division. Government technical data includes 22 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-019-4797 |
| Primary Part Number | S1427-3-3-3 |
| Item Name | Valve,calibrated Flow |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Gear Pump Division |
| Status | ACTIVE |
| Flow Control Device | PISTON, FREE TYPE |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | IDENTICAL |
| Body Style | TEE ANGLE |
| Regulation Type | MANUAL SINGLE STAGE |
| Third End Relationship with Preceding Ends | NOT IDENTICAL WITH FIRST OR SECOND END |
| First End Style Designator | PLAIN |
| End Connection Quantity | 3 |
| Manual Control Method | SCREW |
| Third End Thread Direction | RIGHT-HAND |
| First End Connection Type | THREADED INTERNAL PIPE |
| Surface Treatment | CADMIUM OUTSIDE |
| Third End Connection Type | THREADED INTERNAL PIPE |
| Material | STEEL BODY |
| Material | STEEL FLOW CONTROL DEVICE |
| Media for Which Designed | HYDRAULIC OIL |
| Maximum Inlet Pressure Rating | ERR-060 |
| Third End Style Designator | PLAIN |
| Center to Center Distance | 2.125 INCHES NOMINAL IN |
| Thread Size and Series/type Designator | 3/8-18 NPTF FIRST END |
| Thread Size and Series/type Designator | 1/4-18 NPTF THIRD END |
| Valve Discharge Flow Rate | 25.0 GALLONS PER MINUTE AND 40.0 GALLONS PER MINUTE |
| 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 |
|---|---|
| S1427-3-3-3 PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Gear Pump Division (USA) |
| 989573 | Parker-Hannifin Corporation Dba Pneutronics Div Gear Pump Division (USA) |
| 989585 PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Gear Pump Division (USA) |
| Reference | Meaning |
|---|---|
| S1427-4-4-3 | 5/9 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Gear Pump Division |
NSN 4820-01-019-4797 is a Valve,calibrated Flow, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Gear Pump Division, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-019-4797 has 3 manufacturer part numbers on file: S1427-3-3-3 (Parker-Hannifin Corporation Dba Pneutronics Div Gear Pump Division), 989573 (Parker-Hannifin Corporation Dba Pneutronics Div Gear Pump Division), 989585 (Parker-Hannifin Corporation Dba Pneutronics Div Gear Pump Division).
Key specifications for S1427-3-3-3: Flow Control Device: PISTON, FREE TYPE; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: IDENTICAL; Body Style: TEE ANGLE. 22 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.