The Valve,butterfly, cataloged under National Stock Number 4810-01-181-0855, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Cosmodyne, Llc Dba Cosmodyne Llc. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 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 | 4810-01-181-0855 |
| Primary Part Number | 3203531-3 |
| Item Name | Valve,butterfly |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Cosmodyne, Llc Dba Cosmodyne Llc |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Flange Face Design | PLAIN FIRST END |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Operating Pressure | 275.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Operating Pressure | 95.0 POUNDS PER SQUARE INCH (PSI) NOMINAL POWER DRIVE LBS |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Material | STEEL CORROSION RESISTING OVERALL |
| Valve Operation Method | AIR |
| 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 |
|---|---|
| 3203531-3 PRIMARY | Cosmodyne, Llc Dba Cosmodyne Llc (USA) |
NSN 4810-01-181-0855 is a Valve,butterfly, manufactured by Cosmodyne, Llc Dba Cosmodyne Llc, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-01-181-0855 has 1 manufacturer part number on file: 3203531-3 (Cosmodyne, Llc Dba Cosmodyne Llc).
1 possible match (shared part number, not a government interchangeability claim): 5945-01-198-7886. Verify interchangeability with system specifications before substitution.
Key specifications for 3203531-3: Flange Shape: ROUND WITH HOLES ALL ENDS; Flange Face Design: PLAIN FIRST END; Connection Type: FLANGE ALL ENDS; Style Designator: STRAIGHT THRU FLANGED ENDS. 9 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.