The Disk,valve, cataloged under National Stock Number 4820-01-151-5708, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Walworth Company. Government technical data includes 6 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-151-5708 |
| Primary Part Number | 2620-901 PIECE 5,1 1-4IN |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | The Walworth Company |
| Status | ACTIVE |
| Shank Diameter | 0.812 INCHES NOMINAL IN |
| Flange Diameter | 1.563 INCHES NOMINAL IN |
| Pressure Rating | 700.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Style Designator | POPPET |
| Media for Which Designed | WATER, FRESH OR GAS OR OIL |
| Material | NICKEL ALLOY AND PLASTIC POLYTETRAFLUOROETHYLENE |
| 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 |
|---|---|
| 2620-901 PIECE 5,1 1-4IN PRIMARY | The Walworth Company (USA) |
| C-38407 PRIMARY | The Walworth Company (USA) |
| Reference | Meaning |
|---|---|
| C-38469 | 5/9 Secondary reference The Walworth Company |
| 845-188958 | D/9 Drawing number reference only U.S. Government activity |
| 703923 | C/1 Advisory reference — outside the item-of-supply concept The Walworth Company |
| 845-1889586 PIECE 5,1 1-4IN | 3/2 Design control — primary reference U.S. Government activity |
| 2620-901 PIECE 5,1 1-4IN | 5/9 Secondary reference U.S. Government activity |
| 2620-901 | D/9 Drawing number reference only U.S. Government activity |
NSN 4820-01-151-5708 is a Disk,valve, manufactured by The Walworth Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-151-5708 has 2 manufacturer part numbers on file: 2620-901 PIECE 5,1 1-4IN (The Walworth Company), C-38407 (The Walworth Company).
Key specifications for 2620-901 PIECE 5,1 1-4IN: Shank Diameter: 0.812 INCHES NOMINAL IN; Flange Diameter: 1.563 INCHES NOMINAL IN; Overall Height: 1.844 INCHES NOMINAL IN; Pressure Rating: 700.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS. 6 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.