The Valve Assembly,manifold, cataloged under National Stock Number 4820-01-346-4455, 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 8 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-346-4455 |
| Primary Part Number | 556-6409160-AY99 |
| Item Name | Valve Assembly,manifold |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Valve Quantity | 2 |
| Nominal Pipe Size Accommodated | 1.920 INCHES IN |
| Operating Pressure and Type | 3300.0 POUNDS PER SQUARE INCH (PSI) HYDRAULIC FLUID, PETROLEUM BASE MAXIMUM REQUIRED LBS |
| Connection Type | BUTT WELD PIPE |
| End Connection Quantity | 4 |
| Valve Size | 1.500 INCHES IN |
| Body Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 556-6409160-AY99 PRIMARY | Naval Sea Systems Command (USA) |
| 211030934 | Naval Sea Systems Command (USA) |
NSN 4820-01-346-4455 is a Valve Assembly,manifold, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-346-4455 has 2 manufacturer part numbers on file: 556-6409160-AY99 (Naval Sea Systems Command), 211030934 (Naval Sea Systems Command).
Key specifications for 556-6409160-AY99: Valve Quantity: 2; Nominal Pipe Size Accommodated: 1.920 INCHES IN; Operating Pressure and Type: 3300.0 POUNDS PER SQUARE INCH (PSI) HYDRAULIC FLUID, PETROLEUM BASE MAXIMUM REQUIRED LBS; Connection Type: BUTT WELD PIPE. 8 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.