The Disk,valve, cataloged under National Stock Number 4810-00-907-1389, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Automatic Switch Company Dba Asco. Government technical data includes 5 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 | 4810-00-907-1389 |
| Primary Part Number | FV88-271-1A |
| Item Name | Disk,valve |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Automatic Switch Company Dba Asco |
| Status | ACTIVE |
| Shank Diameter | 0.503 INCHES NOMINAL IN |
| Flange Diameter | 0.500 INCHES NOMINAL IN |
| Style Designator | POPPET |
| Media for Which Designed | WATER |
| Material | STEEL AND RUBBER |
| 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 |
|---|---|
| FV88-271-1A PRIMARY | Automatic Switch Company Dba Asco (USA) |
NSN 4810-00-907-1389 is a Disk,valve, manufactured by Automatic Switch Company Dba Asco, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-00-907-1389 has 1 manufacturer part number on file: FV88-271-1A (Automatic Switch Company Dba Asco).
1 possible match (shared part number, not a government interchangeability claim): 4810-01-487-2201. Verify interchangeability with system specifications before substitution.
Key specifications for FV88-271-1A: Shank Diameter: 0.503 INCHES NOMINAL IN; Flange Diameter: 0.500 INCHES NOMINAL IN; Overall Height: 1.245 INCHES NOMINAL IN; Style Designator: POPPET. 5 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.