The Valve,ball, cataloged under National Stock Number 4820-01-120-8646, 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12 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-120-8646 |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flange Face Design | PLAIN ALL ENDS |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | ANGLE FLANGED ENDS |
| Valve Size | 5.000 INCHES IN |
| Bonnet Type | PACKING RETAINING |
| Second Connection Face to Centerline Distance | 7.125 INCHES IN |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| First Connection Face to Centerline Distance | 8.562 INCHES IN |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Material | PLASTIC ACETAL SEAT |
| Material | NICKEL ALLOY BODY |
| 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 |
|---|---|
| 2640-385X1 ASSY | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 845-2109849 | D/9 Drawing number reference only U.S. Government activity |
| 845-2109849ASSYACK | 3/2 Design control — primary reference U.S. Government activity |
| 2640-385-1ASSYASK | 3/2 Design control — primary reference U.S. Government activity |
| 2640-385X1 | D/9 Drawing number reference only U.S. Government activity |
NSN 4820-01-120-8646 is a Valve,ball, classified under FSC 4820, Valves, Nonpowered. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4820-01-121-2944. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-120-8646: Flange Face Design: PLAIN ALL ENDS; Connection Type: FLANGE ALL ENDS; Style Designator: ANGLE FLANGED ENDS; Valve Size: 5.000 INCHES IN. 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.