The Valve,ball, cataloged under National Stock Number 4820-01-146-4806, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-146-4806 |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Connection Style | BEVELED (TUBE) ALL ENDS |
| Connection Type | BUTT WELD TUBE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | MIL-C-20159 MIL SPEC SINGLE MATERIAL RESPONSE BODY |
| Nominal Outside Diameter Tube Accommodated | 5.000 INCHES ALL ENDS IN |
| Operating Pressure | 700.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 160.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material | NICKEL ALLOY STEM |
| Material | PLASTIC ACETAL SEAT |
| Material | COPPER ALLOY 706 BODY |
| Material | TITANIUM FLOW CONTROL DEVICE |
| 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 |
| Reference | Meaning |
|---|---|
| 810-4384431-A M | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 803-4384431-A | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 803-4384431-A 5 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 803-4384431 | D/9 Drawing number reference only U.S. Government activity |
| 803-4384431-A 5 IN | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-146-4806 is a Valve,ball, classified under FSC 4820, Valves, Nonpowered. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 3040-01-200-8708, 4820-01-337-7341. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-146-4806: Connection Style: BEVELED (TUBE) ALL ENDS; Connection Type: BUTT WELD TUBE ALL ENDS; Style Designator: STRAIGHT THRU; Material Document and Classification: MIL-C-20159 MIL SPEC SINGLE MATERIAL RESPONSE BODY. 12 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.