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:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

052190

UFC:

30000

LTL:

RATING VARIABLE

LCL:

WCC:

576

TCC:

SHC:

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