The Valve,butterfly, cataloged under National Stock Number 4810-01-598-3149, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Atec Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4810-01-598-3149 |
| Primary Part Number | 3654AS975-1 |
| Item Name | Valve,butterfly |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Atec Inc |
| Status | ACTIVE |
| Criticality Code Justification | AGAV |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 3654AS975-1 PRIMARY | Atec Inc (USA) |
| 122664-3-1 PRIMARY | Astronics Test Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 3654AS975-1 | 7/2 Vendor item drawing reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
NSN 4810-01-598-3149 is a Valve,butterfly, manufactured by Atec Inc, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-01-598-3149 has 2 manufacturer part numbers on file: 3654AS975-1 (Atec Inc), 122664-3-1 (Astronics Test Systems Inc).
Key specifications for 3654AS975-1: Criticality Code Justification: AGAV; Part Name Assigned by Controlling Agency: VALVE,BUTTERFLY SHUTOFF 3" DIA PNEUMATIC; End Item Identification: ENGINE TEST SET. 1 specification is 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.
NSN 4810-01-598-3149 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.