The Valve,butterfly, cataloged under National Stock Number 4820-01-415-2598, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Valve,butterfly |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Leslie Controls, Inc. Dba Leslie Controls Inc (CAGE 35795); Naval Sea Systems Command (CAGE 53711) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-415-2598 |
| Primary Part Number | 2498-00-312 SZ 8, STY-B,TY-III |
| Item Name | Valve,butterfly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Leslie Controls, Inc. Dba Leslie Controls Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| 2498-00-312 SZ 8, STY-B,TY-III PRIMARY | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
| 211071240 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| MIL-V-24624 STY B TYP III | 5/9 Secondary reference U.S. Government activity |
| MIL-V-24624 | 5/9 Secondary reference U.S. Government activity |
| 2498-00-312 SZ- | C/1 Advisory reference — outside the item-of-supply concept Leslie Controls, Inc. Dba Leslie Controls Inc |
| 2498-00-312 SZ 8, STY-B,TY-III | 5/9 Secondary reference Circor Intl Inc |
| 2498-00-312 | D/9 Drawing number reference only Circor Intl Inc |
| MIL-DTL-24624 | 4/1 Identification reference U.S. Government activity |
NSN 4820-01-415-2598 is a Valve,butterfly, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-415-2598 has 2 manufacturer part numbers on file: 2498-00-312 SZ 8, STY-B,TY-III (Leslie Controls, Inc. Dba Leslie Controls Inc), 211071240 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-441-9404. Verify interchangeability with system specifications before substitution.
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.