The Valve,ball, cataloged under National Stock Number 4820-00-901-2444, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-00-901-2444 |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES FIRST END |
| Flange Face Design | PLAIN FIRST END |
| Bolt Circle Nominal Diameter | 7.188 INCHES FIRST END IN |
| Criticality Code Justification | ZZZY |
| Connection Type | FLANGE FIRST END |
| Style Designator | STRAIGHT THRU |
| Bolt Hole Nominal Diameter | 0.687 INCHES FIRST END IN |
| Operating Pressure | 650.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Operating Pressure | 2000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM POWER DRIVE LBS |
| Nominal Outside Diameter | 8.687 INCHES FIRST END IN |
| Bolt Hole Quantity | 10 FIRST END |
| Media for Which Designed | WATER, SALT SINGLE RESPONSE |
| Valve Operation Method | HYDRAULIC |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Reference | Meaning |
|---|---|
| SS845-2180978 ASSY RATWUTACT | 3/1 Design control — primary reference U.S. Government activity |
| SS845-2180978 ASSY RATWUTACTL1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 2640-699X1ASSYRA4IN | 5/1 Secondary reference U.S. Government activity |
| 2640-699X1ASSYRA4INL1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
NSN 4820-00-901-2444 is a Valve,ball, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-00-901-2444: Flange Shape: ROUND WITH HOLES FIRST END; Flange Face Design: PLAIN FIRST END; Bolt Circle Nominal Diameter: 7.188 INCHES FIRST END IN; Criticality Code Justification: ZZZY. 14 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 4820-00-901-2444 has DEMIL Code B. 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.