The Seat,valve, cataloged under National Stock Number 4810-01-056-9526, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-01-056-9526 |
| Item Name | Seat,valve |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.066 INCHES NOMINAL IN |
| Flange Diameter | 2.248 INCHES NOMINAL IN |
| Body Outside Diameter | 2.086 INCHES NOMINAL IN |
| Style Designator | PLAIN FLANGED |
| Body Inside Diameter | 1.386 INCHES NOMINAL IN |
| Under Flange Height | 0.312 INCHES NOMINAL IN |
| Material | NICKEL ALLOY OVERALL |
| Seat Angle in Deg | 45.000 NOMINAL |
| Seating Surface Shape | ANGULAR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 188476-0061 | 3/2 Design control — primary reference U.S. Government activity |
| 281439-0001 | D/9 Drawing number reference only U.S. Government activity |
NSN 4810-01-056-9526 is a Seat,valve, classified under FSC 4810, Valves, Powered. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 4810-01-056-9527, 4820-01-058-0047, 4820-01-108-7808. Verify interchangeability with system specifications before substitution.
Key specifications for 4810-01-056-9526: Flange Seat to Disk End Height: 0.066 INCHES NOMINAL IN; Flange Diameter: 2.248 INCHES NOMINAL IN; Body Outside Diameter: 2.086 INCHES NOMINAL IN; Style Designator: PLAIN FLANGED. 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.