Model: B28171791

Valve Seat

Properties:

Flange Diameter
Between 2.747 inches and 2.749 inches
Body Outside Diameter
Between 2.626 inches and 2.627 inches
Body Inside Diameter
Between 1.311 inches and 1.314 inches
Flange Seat To Disk End Height
0.375 inches
Under Flange Height
0.250 inches
Seat Angle In Deg
45.000
Seating Surface Shape
Angular
Material
Rod, welding, surfacing face
Material
Stainless steel body
Material Specification
Mil-r-17131, type mil-rcocr-a military specification single material response face
Style Designator
Plain flanged
Fsc Application Data
Marine turbine
NSN
4820-00-238-6141
Part Number
B28171791
Description
Seat,valve
CAGE
0BR59

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 B28171791 NSN 4820-00-238-6141

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:
A
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
051080
UFC:
29300
LTL:
RATING VARIABLE
LCL:
--
WCC:
593
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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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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