The Seat,valve, cataloged under National Stock Number 4810-00-218-2175, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions. Government technical data includes 7 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-00-218-2175 |
| Primary Part Number | CMK36K4NA |
| Item Name | Seat,valve |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.308 INCHES NOMINAL IN |
| Flange Diameter | 4.356 INCHES NOMINAL IN |
| Body Outside Diameter | 3.925 INCHES NOMINAL IN |
| Style Designator | PLAIN FLANGED |
| Body Inside Diameter | 0.772 INCHES NOMINAL IN |
| Under Flange Height | 0.375 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 |
|---|---|
| CMK36K4NA PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| Reference | Meaning |
|---|---|
| CMK36K4NA | 5/9 Secondary reference U.S. Government activity |
| CMK36K4NA | 3/9 Design control — primary reference Siemens Energy, Inc. Dba Dresser-Rand |
| CMK36K4NA | 5/9 Secondary reference Ingersoll Rand Co |
NSN 4810-00-218-2175 is a Seat,valve, manufactured by Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-00-218-2175 has 1 manufacturer part number on file: CMK36K4NA (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions).
Key specifications for CMK36K4NA: Flange Seat to Disk End Height: 0.308 INCHES NOMINAL IN; Flange Diameter: 4.356 INCHES NOMINAL IN; Body Outside Diameter: 3.925 INCHES NOMINAL IN; Style Designator: PLAIN FLANGED. 7 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.