The Seat,valve, cataloged under National Stock Number 4820-00-474-4473, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Ontic Engineering & Manufacturing, Inc Dba Ontic Us. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-474-4473 |
| Primary Part Number | R214-10 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Ontic Engineering & Manufacturing, Inc Dba Ontic Us |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.094 INCHES NOMINAL IN |
| Flange Diameter | 0.719 INCHES NOMINAL IN |
| FSC Application Data | ACFT PROPELLER FEATHERING PUMP |
| Body Outside Diameter | 0.627 INCHES NOMINAL IN |
| Style Designator | PLAIN FLANGED |
| Body Inside Diameter | 0.436 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN |
| Under Flange Height | 0.594 INCHES NOMINAL IN |
| Seating Surface Shape | FLAT |
| 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 |
|---|---|
| R214-10 PRIMARY | Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA) |
| Reference | Meaning |
|---|---|
| R214-10 | 5/9 Secondary reference Donallco Inc |
NSN 4820-00-474-4473 is a Seat,valve, manufactured by Ontic Engineering & Manufacturing, Inc Dba Ontic Us, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-474-4473 has 1 manufacturer part number on file: R214-10 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us).
Key specifications for R214-10: Flange Seat to Disk End Height: 0.094 INCHES NOMINAL IN; Flange Diameter: 0.719 INCHES NOMINAL IN; FSC Application Data: ACFT PROPELLER FEATHERING PUMP; Body Outside Diameter: 0.627 INCHES NOMINAL IN. 8 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.