The Valve,ball, cataloged under National Stock Number 4820-01-257-9792, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok. Government technical data includes 13 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-257-9792 |
| Primary Part Number | 7941G4Y |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok |
| Status | ACTIVE |
| Connection Style | FLARELESS (TUBE) ALL ENDS |
| Connection Type | THREADED INTERNAL TUBE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | 66,AISI3030/SAE3030 FED STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | 66,AISI3030/SAE3030 FED STD SINGLE MATERIAL RESPONSE STEM |
| Operating Pressure | 6000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.250 INCHES ALL ENDS IN |
| Maximum Operating Temp | 300.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material | STEEL COMP 316 BODY |
| Material | STEEL COMP 303 STEM |
| Material | STEEL COMP 316 SEAT |
| Thread Series Designator | NPT FIRST END |
| 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 |
|---|---|
| 7941G4Y PRIMARY | Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok (USA) |
NSN 4820-01-257-9792 is a Valve,ball, manufactured by Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-257-9792 has 1 manufacturer part number on file: 7941G4Y (Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok).
Key specifications for 7941G4Y: Connection Style: FLARELESS (TUBE) ALL ENDS; Connection Type: THREADED INTERNAL TUBE ALL ENDS; Style Designator: STRAIGHT THRU; Material Document and Classification: 66,AISI3030/SAE3030 FED STD SINGLE MATERIAL RESPONSE BODY. 13 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.