The Seat,valve, cataloged under National Stock Number 4810-01-143-9967, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Triumph Actuation Systems - Connecticut, Llc. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4810-01-143-9967 |
| Primary Part Number | 4202055-1 |
| Item Name | Seat,valve |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Triumph Actuation Systems - Connecticut, Llc |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.150 INCHES NOMINAL IN |
| Flange Diameter | 0.365 INCHES NOMINAL IN |
| FSC Application Data | POWER UNIT,STEERING |
| Body Outside Diameter | 0.311 INCHES NOMINAL IN |
| Hardness Rating | 50.0 ROCKWELL C MINIMUM AND 54.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | PLAIN FLANGED |
| Material Document and Classification | QQ-S-763,CL 10,TY A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 0.067 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN |
| Under Flange Height | 0.029 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN |
| Material | STEEL COMP 440C OVERALL |
| 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 |
|---|---|
| 4202055-1 PRIMARY | Triumph Actuation Systems - Connecticut, Llc (USA) |
| Reference | Meaning |
|---|---|
| 10109185 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 4810-01-143-9967 is a Seat,valve, manufactured by Triumph Actuation Systems - Connecticut, Llc, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-01-143-9967 has 1 manufacturer part number on file: 4202055-1 (Triumph Actuation Systems - Connecticut, Llc).
Key specifications for 4202055-1: Flange Seat to Disk End Height: 0.150 INCHES NOMINAL IN; Flange Diameter: 0.365 INCHES NOMINAL IN; FSC Application Data: POWER UNIT,STEERING; Body Outside Diameter: 0.311 INCHES NOMINAL IN. 11 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.