NSN 4820-01-128-4189

Part Details | VALVE SEAT

4820-01-128-4189 A replaceable item designed to provide a stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see INSERT, ENGINE VALVE SEAT.

Alternate Parts: 1D221461, 1D22146-1, 10124584, 4820-01-128-4189, 01-128-4189, 4820011284189, 011284189

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
48MAR 20, 198201-128-418922113 ( SEAT, VALVE )
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 4820-01-128-4189
Part Number Cage Code Manufacturer
1D22146-118355BOEING COMPANY, THEDBA BOEING
10124584A486GNIMIKKEISTOKESKUS NCB FINLAND
Technical Data | NSN 4820-01-128-4189
Characteristic Specifications
FLANGE DIAMETER0.548 INCHES NOMINAL
BODY OUTSIDE DIAMETER0.438 INCHES NOMINAL
BODY INSIDE DIAMETER0.144 INCHES NOMINAL
FLANGE SEAT TO DISK END HEIGHT0.191 INCHES NOMINAL
UNDER FLANGE HEIGHT0.299 INCHES NOMINAL
SEATING SURFACE SHAPE ANGULAR
SEAT ANGLE IN DEG45.000 NOMINAL