The Valve Assembly, cataloged under National Stock Number 4820-01-531-9834, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Huntington Ingalls Inc Div Newport News Shipbuilding. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-531-9834 |
| Primary Part Number | 508-4325932(ASSY95) |
| Item Name | Valve Assembly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| Valve Quantity | 4 |
| Furnished Items and Quantity | 4 HANDWHEEL |
| Operating Pressure and Type | 250.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LBS |
| Connection Type | FLANGE, ROUND W/HOLES |
| End Connection Quantity | 5 |
| Valve Size | 4.000 INCHES IN |
| Body Material | NICKEL ALLOY |
| 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 |
|---|---|
| 508-4325932(ASSY95) PRIMARY | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| Reference | Meaning |
|---|---|
| 4325932 | D/9 Drawing number reference only Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 4820-01-531-9834 is a Valve Assembly, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-531-9834 has 1 manufacturer part number on file: 508-4325932(ASSY95) (Huntington Ingalls Inc Div Newport News Shipbuilding).
Key specifications for 508-4325932(ASSY95): Valve Quantity: 4; Furnished Items and Quantity: 4 HANDWHEEL; Operating Pressure and Type: 250.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LBS; Connection Type: FLANGE, ROUND W/HOLES. 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.