The Valve,ball, cataloged under National Stock Number 4820-01-131-3040, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-131-3040 |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES FIRST END |
| Flange Face Design | RECESSED STRAIGHT FIRST END |
| Bolt Circle Nominal Diameter | 7.500 INCHES FIRST END IN |
| Connection Type | FLANGE FIRST END |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Bolt Hole Nominal Diameter | 0.750 INCHES FIRST END IN |
| Valve Size | 4.000 INCHES IN |
| Nominal Outside Diameter | 9.000 INCHES FIRST END IN |
| Bolt Hole Quantity | 8 FIRST END |
| Material | COPPER ALLOY BODY |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE PACKING |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE SEAT |
| Material | STEEL CORROSION RESISTING STEM |
| Valve Operation Method | MANUAL |
| Recess Nominal Diameter | 4.000 INCHES FIRST 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 |
|---|---|
| SP-78117 | 3/2 Design control — primary reference U.S. Government activity |
| 5353739 | 7/2 Vendor item drawing reference Naval Sea Systems Command |
NSN 4820-01-131-3040 is a Valve,ball, classified under FSC 4820, Valves, Nonpowered. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5310-01-242-9649. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-131-3040: Flange Shape: ROUND WITH HOLES FIRST END; Flange Face Design: RECESSED STRAIGHT FIRST END; Bolt Circle Nominal Diameter: 7.500 INCHES FIRST END IN; Connection Type: FLANGE FIRST END. 15 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.