The Disk,valve, cataloged under National Stock Number 4820-01-421-1680, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hunt Valve Company, Inc.. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-421-1680 |
| Primary Part Number | 15-2 PART 33 3IN |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hunt Valve Company, Inc. |
| Status | ACTIVE |
| Pressure Rating | 350.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| 15-2 PART 33 3IN PRIMARY | Hunt Valve Company, Inc. (USA) |
| 15-2-0300-33 | Hunt Valve Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 15-2 PART 33 3IN | 3/9 Design control — primary reference Pima Valve, Llc |
| 15-2-0300-33 | 5/9 Secondary reference Pima Valve, Llc |
NSN 4820-01-421-1680 is a Disk,valve, manufactured by Hunt Valve Company, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-421-1680 has 2 manufacturer part numbers on file: 15-2 PART 33 3IN (Hunt Valve Company, Inc.), 15-2-0300-33 (Hunt Valve Company, Inc.).
Key specifications for 15-2 PART 33 3IN: Pressure Rating: 350.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Special Features: INCLUDES DISK INSERT AND SILVER SOLDER; End Item Identification: OSPREY CLASS MHC; Material: COPPER ALLOY. 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.