The Disk,valve, cataloged under National Stock Number 4820-01-484-0573, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-484-0573 |
| Primary Part Number | 8953-015-002-S |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Velan Valve Corp. |
| Status | ACTIVE |
| Seat Angle | 5.0 DEGREES NOMINAL |
| 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 |
|---|---|
| 8953-015-002-S PRIMARY | Velan Valve Corp. (USA) |
| 8840-034 ITEM NO 6D | Velan Valve Corp. (USA) |
| Reference | Meaning |
|---|---|
| MIL-V-18110 | 5/9 Secondary reference U.S. Government activity |
| 8840-034 | D/9 Drawing number reference only Velan Valve Corp. |
| MIL-DTL-18110 | 4/1 Identification reference U.S. Government activity |
NSN 4820-01-484-0573 is a Disk,valve, manufactured by Velan Valve Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-484-0573 has 2 manufacturer part numbers on file: 8953-015-002-S (Velan Valve Corp.), 8840-034 ITEM NO 6D (Velan Valve Corp.).
Key specifications for 8953-015-002-S: Overall Height: 2.5938 INCHES NOMINAL IN; Seat Angle: 5.0 DEGREES NOMINAL; Special Features: MATERIAL IS FORGED CARBON STEEL (COMPOSITION D) ASTM A105 OR A216 GR WCB AND IS STELLITED (COBALT ALLOY); 1/4 INCH HOLE DRILLED INTO UPSTREAM SIDE IN; End Item Identification: 4820-01-469-3320; VELAN 2.5 IN. PRESSURE SEAL GATE VALVE 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.