The Disk,valve, cataloged under National Stock Number 4820-01-470-8772, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Velan Valve Corp.. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-470-8772 |
| Primary Part Number | 8254-010-061 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Velan Valve Corp. |
| Status | ACTIVE |
| Pressure Rating | 750.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Shoulder Height | 1.000 INCHES NOMINAL IN |
| Temp Rating | 705.0 FAHRENHEIT NOMINAL DEGF |
| Outside Diameter | 2.250 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Inside Diameter | 1.635 INCHES NOMINAL IN |
| Media for Which Designed | LIQUID |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 8254-010-061 PRIMARY | Velan Valve Corp. (USA) |
| 7840-018 ITEM NO 06 | Velan Valve Corp. (USA) |
| Reference | Meaning |
|---|---|
| 7840-018 | D/9 Drawing number reference only Velan Valve Corp. |
NSN 4820-01-470-8772 is a Disk,valve, manufactured by Velan Valve Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-470-8772 has 2 manufacturer part numbers on file: 8254-010-061 (Velan Valve Corp.), 7840-018 ITEM NO 06 (Velan Valve Corp.).
4 possible matches (shared part number, not a government interchangeability claim): 4820-01-470-8774, 4820-01-470-8850, 4820-01-470-9090. Verify interchangeability with system specifications before substitution.
Key specifications for 8254-010-061: Overall Height: 1.250 INCHES NOMINAL IN; Pressure Rating: 750.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Shoulder Height: 1.000 INCHES NOMINAL IN; Temp Rating: 705.0 FAHRENHEIT NOMINAL DEGF. 8 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.