The Valve,ball, cataloged under National Stock Number 4820-01-280-3979, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is William Powell Company, the Dba Powell Valve Div the Starflo Corporation. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-280-3979 |
| Primary Part Number | 4201T-SE-2IN-61992 |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | William Powell Company, the Dba Powell Valve Div the Starflo Corporation |
| Status | ACTIVE |
| Connection Style | PLAIN,OPTIONAL END(PIPE) ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | ASTM B-16 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | ASTM B-124 GRADE 377 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | ASTM B-21 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| Operating Pressure | 1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 2.000 INCHES ALL ENDS IN |
| Maximum Operating Temp | 100.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material | COPPER ALLOY 360 FLOW CONTROL DEVICE |
| Material | COPPER ALLOY STEM |
| Material | COPPER ALLOY 377 BODY |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE SEAT |
| Thread Series Designator | NPT ALL ENDS |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 4201T-SE-2IN-61992 PRIMARY | William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA) |
| 61992 4201T-SE-2IN | William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA) |
NSN 4820-01-280-3979 is a Valve,ball, manufactured by William Powell Company, the Dba Powell Valve Div the Starflo Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-280-3979 has 2 manufacturer part numbers on file: 4201T-SE-2IN-61992 (William Powell Company, the Dba Powell Valve Div the Starflo Corporation), 61992 4201T-SE-2IN (William Powell Company, the Dba Powell Valve Div the Starflo Corporation).
Key specifications for 4201T-SE-2IN-61992: Connection Style: PLAIN,OPTIONAL END(PIPE) ALL ENDS; Connection Type: THREADED INTERNAL PIPE ALL ENDS; Style Designator: STRAIGHT THRU; Material Document and Classification: ASTM B-16 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE. 16 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.