The Valve,ball, cataloged under National Stock Number 4820-01-368-6444, 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 16 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-368-6444 |
| Primary Part Number | 801-6408779-AY97 |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 2.540 INCHES SECOND END IN |
| Nominal Pipe Size Accommodated | 2.610 INCHES FIRST END IN |
| Connection Style | BEVELED (PIPE) SECOND END |
| Connection Style | BEVELED (PIPE) FIRST END |
| Connection Type | BUTT WELD PIPE FIRST END |
| Connection Type | BUTT WELD PIPE SECOND END |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | MIL-C-20159 MIL SPEC SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | MIL-T-9047 MIL SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | QQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE STEM |
| Media for Which Designed | WATER, SALT SINGLE RESPONSE |
| Material | NICKEL ALLOY STEM |
| Material | COPPER ALLOY 964 BODY |
| Material | PLASTIC ACETAL SEAT |
| Material | TITANIUM ALLOY FLOW CONTROL DEVICE |
| Valve Operation Method | HYDRAULIC |
| 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 |
|---|---|
| 801-6408779-AY97 PRIMARY | Naval Sea Systems Command (USA) |
| 211061366 | Naval Sea Systems Command (USA) |
| 6408779-AY97 | Naval Sea Systems Command (USA) |
| DF330636-AY97 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
NSN 4820-01-368-6444 is a Valve,ball, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-368-6444 has 4 manufacturer part numbers on file: 801-6408779-AY97 (Naval Sea Systems Command), 211061366 (Naval Sea Systems Command), 6408779-AY97 (Naval Sea Systems Command), DF330636-AY97 (Huntington Ingalls Inc Div Newport News Shipbuilding).
Key specifications for 801-6408779-AY97: Nominal Pipe Size Accommodated: 2.540 INCHES SECOND END IN; Nominal Pipe Size Accommodated: 2.610 INCHES FIRST END IN; Connection Style: BEVELED (PIPE) SECOND END; Connection Style: BEVELED (PIPE) FIRST END. 16 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.