The Disk,valve, cataloged under National Stock Number 4820-01-026-4897, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Pentair Filtration Solutions, Llc. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-026-4897 |
| Primary Part Number | 4857-00 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Pentair Filtration Solutions, Llc |
| Status | ACTIVE |
| Shank Diameter | 0.640 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 |
|---|---|
| 4857-00 PRIMARY | Pentair Filtration Solutions, Llc (USA) |
| Reference | Meaning |
|---|---|
| 4857 | 5/9 Secondary reference Pentair Filtration Solutions, Llc |
| 300D-103 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-026-4897 is a Disk,valve, manufactured by Pentair Filtration Solutions, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-026-4897 has 1 manufacturer part number on file: 4857-00 (Pentair Filtration Solutions, Llc).
3 possible matches (shared part number, not a government interchangeability claim): 5120-01-073-0377, 5360-01-153-0590, 4310-01-498-5041. Verify interchangeability with system specifications before substitution.
Key specifications for 4857-00: Shank Diameter: 0.640 INCHES NOMINAL IN; Overall Height: 0.810 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.