The Valve,plug, cataloged under National Stock Number 4820-00-438-3944, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-438-3944 |
| Item Name | Valve,plug |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Connection Style | GASKET SEAL(BOSS) FIRST ENDGASKET SEAL(BOSS) FIRST END |
| Connection Type | THREADED INTERNAL BOSS FIRST ENDTHREADED INTERNAL BOSS FIRST END |
| Flow Style | FOUR-WAY FOUR PORT 90 DEGREE PLUG TURNFOUR-WAY FOUR PORT 90 DEGREE PLUG TURN |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | RIGHT-HAND FIRST ENDRIGHT-HAND FIRST END |
| Nominal Thread Size | 0.562 INCHES FIRST END0.562 INCHES FIRST END IN |
| Maximum Operating Temp | 160.0 FAHRENHEIT SINGLE RESPONSE160.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Mounting Facility | THREADED FASTENERTHREADED FASTENER |
| Media for Which Designed | HYDRAULIC FLUID, PETROLEUM BASE SECOND RESPONSE |
| Media for Which Designed | HYDRAULIC FLUID, PETROLEUM BASE SECOND RESPONSEFUEL/OIL, HYDROCARBON FIRST RESPONSE |
| Thread Class | 3B FIRST END3B FIRST END |
| Test Data Document | 81349-MIL-V-5529 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Thread Quantity Per Inch | 18 FIRST END18 FIRST END |
| Material | STEEL FLOW CONTROL DEVICE |
| Material | STEEL FLOW CONTROL DEVICESTEEL SEAT |
| Material | STEEL SEATSTEEL BODY |
| Thread Series Designator | UNF FIRST END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 20907-2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-00-438-3944 is a Valve,plug, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-00-438-3944: Connection Style: GASKET SEAL(BOSS) FIRST ENDGASKET SEAL(BOSS) FIRST END; Connection Type: THREADED INTERNAL BOSS FIRST ENDTHREADED INTERNAL BOSS FIRST END; Flow Style: FOUR-WAY FOUR PORT 90 DEGREE PLUG TURNFOUR-WAY FOUR PORT 90 DEGREE PLUG TURN; Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. 17 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.
NSN 4820-00-438-3944 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.