The Valve,butterfly, cataloged under National Stock Number 4820-01-414-8052, 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. Government technical data includes 14 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4820-01-414-8052 |
| Primary Part Number | 2498-00-288 SZ6,STY-B,TY-III |
| Item Name | Valve,butterfly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Leslie Controls, Inc. Dba Leslie Controls Inc |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Flange Face Design | PLAIN ALL ENDS |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Valve Size | 6.000 INCHES IN |
| Departure From Cited Document | ACTUATOR INCLUDES LOCKING HANDLE |
| Nondefinitive Spec/std Data | 3 TYPE AND B STYLE |
| Nominal Outside Diameter | 11.000 INCHES ALL ENDS IN |
| Mounting Facility | LUG(S) |
| Face to Face Distance | 2.250 INCHES IN |
| Material | COPPER ALLOY BODY |
| Material | NICKEL ALLOY STEM |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| 211071239 | Naval Sea Systems Command (USA) |
| 2498-00-288 SZ6,STY-B,TY-III PRIMARY | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
| Reference | Meaning |
|---|---|
| MIL-V-24624 | 5/9 Secondary reference U.S. Government activity |
| 24980990288 6,B,3 | C/1 Advisory reference — outside the item-of-supply concept Leslie Controls, Inc. Dba Leslie Controls Inc |
| MIL-DTL-24624 | 4/1 Identification reference U.S. Government activity |
| 2498-00-288 SZ6,STY-B,TY-III | 5/9 Secondary reference Circor Intl Inc |
| 2498-00-288 | D/9 Drawing number reference only Circor Intl Inc |
NSN 4820-01-414-8052 is a Valve,butterfly, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-414-8052 has 2 manufacturer part numbers on file: 211071239 (Naval Sea Systems Command), 2498-00-288 SZ6,STY-B,TY-III (Leslie Controls, Inc. Dba Leslie Controls Inc).
1 possible match (shared part number, not a government interchangeability claim): 5305-01-696-5842. Verify interchangeability with system specifications before substitution.
Key specifications for 2498-00-288 SZ6,STY-B,TY-III: Flange Shape: ROUND WITH HOLES ALL ENDS; Flange Face Design: PLAIN ALL ENDS; Connection Type: FLANGE ALL ENDS; Style Designator: STRAIGHT THRU FLANGED ENDS. 14 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.