Model: 311903-25

Valve Seat

Description:

0.374 inches flange diameter, 0.240 inches body outside diameter, 0.114 inches body inside diameter, 0.147 mils flange seat to disk end height.

Special Features:

Four slots 0.070 in. Max spaced 91 degrees max apart

Properties:

Flange Diameter

Between 0.374 inches and 0.375 inches

Body Outside Diameter

Between 0.240 inches and 0.260 inches

Body Inside Diameter

Between 0.114 inches and 0.118 inches

Seat Radius

0.078 inches

Flange Seat To Disk End Height

0.147 mils and 0.163 centimeters

Under Flange Height

Between 0.269 inches and 0.275 inches

Seating Surface Shape

Flat

Material

Steel

Material Specification

Mil-s-7720, comp 302 military specification single material response

Style Designator

Plain flanged

Fsc Application Data

Valve, temperatore control system

NSN

4810-00-009-0423

Part Number

311903-25

Description

Seat,valve

CAGE

59364

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 311903-25 NSN 4810-00-009-0423

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:

Paclk Weight:

0.1000lbs

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:

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