Model: 172-436

Valve Seat

Properties:

Flange Diameter

Between 2.500 inches and 2.505 inches

Taper Length

0.875 inches

Taper Minor Diameter

Between 1.371 inches and 1.376 inches

Taper Major Diameter

Between 1.907 inches and 1.938 inches

Body Outside Diameter

Between 2.244 inches and 2.249 inches

Body Inside Diameter

Between 1.371 inches and 1.376 inches

Seat Radius

0.250 inches

Flange Seat To Disk End Height

0.437 inches

Under Flange Height

0.875 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 304, cond a federal specification single material response body

Style Designator

Plain flanged

NSN

4820-00-567-6263

Part Number

172-436

Description

Seat,valve

CAGE

27235

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 172-436 NSN 4820-00-567-6263

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:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

3.5 X 3.5 X 3.0

Paclk Weight:

0.3000lbs

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

051080

UFC:

29300

LTL:

RATING VARIABLE

LCL:

WCC:

593

TCC:

SHC:

ACC:

Trailers/Vehicles

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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