Model: 44B3021-740

Valve Seat

Properties:

Flange Diameter
1.750 inches
Taper Length
1.136 mils and 1.146 centimeters
Taper Minor Diameter
Between 0.720 inches and 0.721 inches
Taper Major Diameter
1.002 inches
Body Outside Diameter
1.314 inches
Body Inside Diameter
Between 0.720 inches and 0.721 inches
Seat Radius
0.216 inches
Flange Seat To Disk End Height
0.375 inches
Under Flange Height
1.157 inches
Seating Surface Shape
Radial
Material
Rod, welding, surfacing face
Material
Steel
Material Specification
Mil-r-17131, type mil-rcocr-a military specification single material response face
Material Specification
Qq-s-763, class 410 federal specification single material response
Style Designator
Plain flanged
NSN
4820-00-529-5989
Part Number
44B3021-740
Description
Seat,valve
CAGE
10855

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 44B3021-740 NSN 4820-00-529-5989

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:
576
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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