Model: 21549AND23172

Valve Seat

Special Features:

With gasket, brass

Properties:

Thread Class
2a single threaded portion
Flange Diameter
1.000 inches
Body Inside Diameter
0.406 inches
Flange Seat To Disk End Height
0.156 inches
Under Flange Height
0.375 inches
Seat Angle In Deg
45.000
Thread Size
0.750 inches single threaded portion
Seating Surface Shape
Angular
Material
Stainless steel or steel
Surface Treatment
Passivate
Style Designator
Threaded flanged
Thread Series Designator
Unef single threaded portion
Fsc Application Data
Steam trap
NSN
4820-00-391-8444
Part Number
21549AND23172
Description
Seat,valve
CAGE
53059

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 21549AND23172 NSN 4820-00-391-8444

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:
052190
UFC:
30000
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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