The Valve,ball, cataloged under National Stock Number 4820-01-191-9183, 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17 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-191-9183 |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Flange Face Design | PLAIN ALL ENDS |
| Bolt Circle Nominal Diameter | 3.875 INCHES FIRST END IN |
| Bolt Circle Nominal Diameter | 3.938 INCHES SECOND END IN |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Bolt Hole Nominal Diameter | 0.688 INCHES FIRST END IN |
| Bolt Hole Nominal Diameter | 0.562 INCHES SECOND END IN |
| Operating Pressure | 700.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Valve Size | 1.500 INCHES IN |
| Bolt Hole Quantity | 6 SECOND END |
| Bolt Hole Quantity | 5 FIRST END |
| Face to Face Distance | 8.750 INCHES IN |
| Material | NICKEL ALLOY BODY |
| Valve Operation Method | MANUAL |
| Nominal Thickness | 1.125 INCHES FIRST END IN |
| Nominal Thickness | 0.844 INCHES SECOND END IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 2642-744-01 | D/9 Drawing number reference only U.S. Government activity |
| 2642-744-01 ASSY A | 3/2 Design control — primary reference U.S. Government activity |
| 845-4558731 ASSY A | 5/2 Secondary reference U.S. Government activity |
| 845-4558731 | D/9 Drawing number reference only U.S. Government activity |
NSN 4820-01-191-9183 is a Valve,ball, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-191-9183: Flange Shape: ROUND WITH HOLES ALL ENDS; Flange Face Design: PLAIN ALL ENDS; Bolt Circle Nominal Diameter: 3.875 INCHES FIRST END IN; Bolt Circle Nominal Diameter: 3.938 INCHES SECOND END IN. 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.
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.