The Valve,check, cataloged under National Stock Number 4820-00-398-4869, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division. Government technical data includes 26 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-00-398-4869 |
| Primary Part Number | 482-3/8D2-2 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division |
| Status | ACTIVE |
| Flow Control Device | POPPETPOPPET |
| Nominal Pipe Size Accommodated | 0.375 INCHES FIRST END0.375 INCHES FIRST END IN |
| Nominal Pipe Size Accommodated | 0.375 INCHES SECOND END0.375 INCHES SECOND END IN |
| Connection Style | PLAIN (PIPE) SECOND ENDPLAIN (PIPE) SECOND END |
| Connection Style | PLAIN, OPTIONAL END (PIPE) FIRST ENDPLAIN, OPTIONAL END (PIPE) FIRST END |
| Mounting Position | HORIZONTAL OR HORIZONTAL OR VERTICALVERTICAL |
| Connection Type | THREADED EXTERNAL PIPE SECOND ENDTHREADED EXTERNAL PIPE SECOND END |
| Connection Type | THREADED INTERNAL PIPE FIRST ENDTHREADED INTERNAL PIPE FIRST END |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | FED STD 66,AISI 304/SAE 30304 FED STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | RIGHT-HAND SECOND ENDRIGHT-HAND SECOND END |
| Thread Direction | RIGHT-HAND FIRST ENDRIGHT-HAND FIRST END |
| Nominal Thread Size | 0.375 INCHES FIRST END0.375 INCHES FIRST END IN |
| Nominal Thread Size | 0.375 INCHES SECOND END0.375 INCHES SECOND END IN |
| Maximum Operating Temp | 200.0 FAHRENHEIT SINGLE RESPONSE200.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Disk Loading Method | SPRINGSPRING |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Thread Quantity Per Inch | 18 FIRST END18 FIRST END |
| Thread Quantity Per Inch | 18 SECOND END18 SECOND END |
| Material | STEEL COMP 304 FLOW CONTROL DEVICE |
| Material | ALUMINUM ALLOY SEATALUMINUM ALLOY BODY |
| Material | STEEL COMP 304 FLOW CONTROL DEVICEALUMINUM ALLOY SEAT |
| Thread Series Designator | ANPT SECOND END |
| Thread Series Designator | ANPT SECOND ENDNPT FIRST END |
| Valve Operation Method | AUTOMATICAUTOMATIC |
| 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 |
|---|---|
| 482-3/8D2-2 PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division (USA) |
| Reference | Meaning |
|---|---|
| 482-3-8D2-2 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-00-398-4869 is a Valve,check, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-398-4869 has 1 manufacturer part number on file: 482-3/8D2-2 (Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division).
Key specifications for 482-3/8D2-2: Flow Control Device: POPPETPOPPET; Nominal Pipe Size Accommodated: 0.375 INCHES FIRST END0.375 INCHES FIRST END IN; Nominal Pipe Size Accommodated: 0.375 INCHES SECOND END0.375 INCHES SECOND END IN; Connection Style: PLAIN (PIPE) SECOND ENDPLAIN (PIPE) SECOND END. 26 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.