Model: 44B3021-738

Valve Seat

Properties:

Flange Diameter
1.750 inches
Taper Length
0.325 inches
Taper Minor Diameter
Between 0.323 inches and 0.327 inches
Taper Major Diameter
0.467 inches
Body Outside Diameter
1.314 inches
Body Inside Diameter
Between 0.319 inches and 0.320 inches
Seat Radius
0.094 inches
Flange Seat To Disk End Height
0.375 inches
Under Flange Height
0.553 inches
Seating Surface Shape
Radial
Material
Rod, welding, surfacing face
Material
Steel body
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 body
Style Designator
Plain flanged
NSN
4820-00-545-3773
Part Number
44B3021-738
Description
Seat,valve
CAGE
72957

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 44B3021-738 NSN 4820-00-545-3773

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:
127220
UFC:
64490
LTL:
77.5
LCL:
--
WCC:
594
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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