The Disk,valve, cataloged under National Stock Number 4820-01-324-2738, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Niantic Tool, Inc. Dba Niantic Tool Co. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-324-2738 |
| Primary Part Number | B2431 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Niantic Tool, Inc. Dba Niantic Tool Co |
| Status | ACTIVE |
| Outside Diameter | 0.750 INCHES NOMINAL IN |
| Material | STEEL |
| 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 |
|---|---|
| B2431 PRIMARY | Niantic Tool, Inc. Dba Niantic Tool Co (USA) |
| 831223 PRIMARY | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (USA) |
| 700338 PRIMARY | Niantic Tool, Inc. Dba Niantic Tool Co (USA) |
| Reference | Meaning |
|---|---|
| 831223 | 5/9 Secondary reference U.S. Government activity |
| 831223 | 5/9 Secondary reference Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions |
| 831223 | 5/9 Secondary reference Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand |
NSN 4820-01-324-2738 is a Disk,valve, manufactured by Niantic Tool, Inc. Dba Niantic Tool Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-324-2738 has 3 manufacturer part numbers on file: B2431 (Niantic Tool, Inc. Dba Niantic Tool Co), 831223 (Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions), 700338 (Niantic Tool, Inc. Dba Niantic Tool Co).
Key specifications for B2431: Overall Height: 7.000 INCHES NOMINAL IN; Outside Diameter: 0.750 INCHES NOMINAL IN; Material: STEEL. 2 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.