The Seat,valve, cataloged under National Stock Number 4810-00-146-4573, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions. 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through both NSN and commercial part number lookups. 32 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4810-00-146-4573 |
| Primary Part Number | SET55 |
| Item Name | Seat,valve |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.275 INCHES NOMINAL IN |
| Flange Diameter | 1.359 INCHES NOMINAL IN |
| Body Outside Diameter | 1.109 INCHES MINIMUM AND 1.156 INCHES MAXIMUM IN |
| Style Designator | PLAIN FLANGED |
| Seat Radius | 0.300 INCHES NOMINAL IN |
| Under Flange Height | 0.350 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Seating Surface Shape | RADIAL |
| 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 |
|---|---|
| SET55 PRIMARY | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (USA) |
| Reference | Meaning |
|---|---|
| HL6066 | 5/9 Secondary reference U.S. Government activity |
| HL3839PC30 | 5/9 Secondary reference U.S. Government activity |
| HL4877PC30 | 5/9 Secondary reference U.S. Government activity |
| HL3831PC30 | 5/9 Secondary reference U.S. Government activity |
| HL6074 | 5/9 Secondary reference U.S. Government activity |
| HL6064PC30 | 5/9 Secondary reference U.S. Government activity |
| HL4705PC30 | 5/9 Secondary reference U.S. Government activity |
| HL3833PC30 | 5/9 Secondary reference U.S. Government activity |
| HL5525PC30 | 5/9 Secondary reference U.S. Government activity |
| HL6189 | 5/9 Secondary reference U.S. Government activity |
| HL7111 | 5/9 Secondary reference U.S. Government activity |
| 2042N | 5/9 Secondary reference U.S. Government activity |
| HL7119 | 5/9 Secondary reference U.S. Government activity |
| HL4435PC30 | 5/9 Secondary reference U.S. Government activity |
| HL5533PC30 | 5/9 Secondary reference U.S. Government activity |
| HL4707PC30 | 5/9 Secondary reference U.S. Government activity |
| SET55 | 5/9 Secondary reference Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions |
| HL4884PC30 | 5/9 Secondary reference U.S. Government activity |
| HL4569PC30 | 5/9 Secondary reference U.S. Government activity |
| HL4567PC30 | 5/9 Secondary reference U.S. Government activity |
NSN 4810-00-146-4573 is a Seat,valve, manufactured by Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-00-146-4573 has 1 manufacturer part number on file: SET55 (Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions).
1 possible match (shared part number, not a government interchangeability claim): 5320-00-972-3381. Verify interchangeability with system specifications before substitution.
Key specifications for SET55: Flange Seat to Disk End Height: 0.275 INCHES NOMINAL IN; Flange Diameter: 1.359 INCHES NOMINAL IN; Body Outside Diameter: 1.109 INCHES MINIMUM AND 1.156 INCHES MAXIMUM IN; Style Designator: PLAIN FLANGED. 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.