The Valve,ball, cataloged under National Stock Number 4820-01-389-2718, 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 9 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 | 4820-01-389-2718 |
| Primary Part Number | 556-6405334-AY84 |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 HANDLE |
| Nominal Pipe Size Accommodated | 1.500 INCHES ALL ENDS IN |
| Connection Style | SOCKET ALL ENDS |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | ASTM B150, ALY C63200 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| Material | PLASTIC SEAT |
| Material | BRONZE STEM |
| 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 |
|---|---|
| 211030123 | Naval Sea Systems Command (USA) |
| 556-6405334-AY84 PRIMARY | Naval Sea Systems Command (USA) |
| 6405334 AY84 PRIMARY | Naval Sea Systems Command (USA) |
| DF330687 AY84 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
NSN 4820-01-389-2718 is a Valve,ball, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-389-2718 has 4 manufacturer part numbers on file: 211030123 (Naval Sea Systems Command), 556-6405334-AY84 (Naval Sea Systems Command), 6405334 AY84 (Naval Sea Systems Command), DF330687 AY84 (Huntington Ingalls Inc Div Newport News Shipbuilding).
Key specifications for 556-6405334-AY84: Furnished Items and Quantity: 1 HANDLE; Nominal Pipe Size Accommodated: 1.500 INCHES ALL ENDS IN; Connection Style: SOCKET ALL ENDS; Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS. 9 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.