The Valve,ball, cataloged under National Stock Number 4820-01-537-8226, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-537-8226 |
| Primary Part Number | 801-6405342 ASSY 95 |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 HANDLE AND 1 LOCKING DEVICE |
| Style Designator | STRAIGHT THRU |
| 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 |
| Part Number | Manufacturer |
|---|---|
| DF330707 ASSY 95 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 801-6405342 ASSY 95 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 11-NS-0655A | 5/1 Secondary reference U.S. Government activity |
NSN 4820-01-537-8226 is a Valve,ball, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-537-8226 has 2 manufacturer part numbers on file: DF330707 ASSY 95 (Huntington Ingalls Inc Div Newport News Shipbuilding), 801-6405342 ASSY 95 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-633-2893. Verify interchangeability with system specifications before substitution.
Key specifications for 801-6405342 ASSY 95: Furnished Items and Quantity: 1 HANDLE AND 1 LOCKING DEVICE; Style Designator: STRAIGHT THRU; Part Name Assigned by Controlling Agency: 1/2 INCH SW BALL VALVE IN; Material: NICKEL ALLOY BODY. 4 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.