Model: 439B750PC4

Valve Seat

Properties:

Flange Diameter
Between 6.750 inches and 6.751 inches
Body Outside Diameter
5.562 inches
Body Inside Diameter
Between 4.295 inches and 4.297 inches
Seat Radius
1.500 inches
Flange Seat To Disk End Height
Between 0.938 inches and 0.940 inches
Under Flange Height
2.000 inches
Seating Surface Shape
Radial
Material
Steel
Material Specification
Qq-s-637 federal specification single material response
Style Designator
Plain flanged
NSN
4820-00-794-2776
Part Number
439B750PC4
Description
Seat,valve
CAGE
01289

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 439B750PC4 NSN 4820-00-794-2776

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:
736
TCC:
Z
SHC:
9
ACC:
Construction Materials

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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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