Model: 28189

Valve Seat

Properties:

Flange Diameter
Between 0.493 inches and 0.497 inches
Body Outside Diameter
Between 0.401 inches and 0.411 inches
Body Inside Diameter
Between 0.312 inches and 0.313 inches
Flange Seat To Disk End Height
Between 0.184 inches and 0.188 inches
Under Flange Height
Between 0.082 inches and 0.096 inches
Seal Accommodation Type
Recessed
Seating Surface Shape
Angular
Material
Steel comp 302 body
Surface Treatment
Passivate
Style Designator
Plain flanged
Fsc Application Data
Aircraft constant speed alternator drive hydraulic oil filter
NSN
4810-00-342-0483
Part Number
28189
Description
Seat,valve
CAGE
99167

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.

Part 28189 NSN 4810-00-342-0483

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
22113
FIIG:
A15500
Concept No.:
App. Key:
A
Cond. Code:
2
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

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Schedule B and Export
  • Schedule B: 8481909090
  • SITC: 74790
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

Freight Class: Parts of taps, cocks, valves and similar appliances, nesoi

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