The Disk Pad, cataloged under National Stock Number 4820-01-545-8471, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-545-8471 |
| Primary Part Number | 9553-003 |
| Item Name | Disk Pad |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Velan Valve Corp. |
| Status | ACTIVE |
| Overall Diameter | 0.843 INCHES NOMINAL IN |
| 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 |
|---|---|
| 9553-003 PRIMARY | Velan Valve Corp. (USA) |
| 7350-063 ITEM NO. 42 | Velan Valve Corp. (USA) |
| Reference | Meaning |
|---|---|
| 7350-063 | D/9 Drawing number reference only Velan Valve Corp. |
NSN 4820-01-545-8471 is a Disk Pad, manufactured by Velan Valve Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-545-8471 has 2 manufacturer part numbers on file: 9553-003 (Velan Valve Corp.), 7350-063 ITEM NO. 42 (Velan Valve Corp.).
Key specifications for 9553-003: Overall Height: 0.250 INCHES NOMINAL IN; Overall Diameter: 0.843 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: DISC PAD; End Item Identification: 4820-01-545-8139; 4 IN. GLOBE VALVE FOR LHD-8 IN. 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.