The Disk,valve, cataloged under National Stock Number 4820-01-425-8094, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Andritz Naf Ab. Government technical data includes 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-425-8094 |
| Primary Part Number | WVTB-70-1-80MM PN7 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Andritz Naf Ab |
| Status | ACTIVE |
| Pressure Rating | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Style Designator | BUTTERFLY |
| Material | ALUMINUM 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 |
|---|---|
| WVTB-70-1-80MM PN7 PRIMARY | Andritz Naf Ab (SWE) |
| Reference | Meaning |
|---|---|
| WVTB-70-1-80MM PN7 | 3/9 Design control — primary reference Naf Ab |
| WVTB-70-1-80MM | C/1 Advisory reference — outside the item-of-supply concept Avk Industrial Nederland B.v. |
NSN 4820-01-425-8094 is a Disk,valve, manufactured by Andritz Naf Ab, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-425-8094 has 1 manufacturer part number on file: WVTB-70-1-80MM PN7 (Andritz Naf Ab).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-425-8215. Verify interchangeability with system specifications before substitution.
Key specifications for WVTB-70-1-80MM PN7: Pressure Rating: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS; Style Designator: BUTTERFLY; Material: ALUMINUM ALLOY. 3 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.