Model: 40G903

Valve Seat

Special Features:

Two lugs, 0.625 in. Square, welded on 6.25 in.Id 180 degrees apart

Properties:

Thread Length

0.875 inches single threaded portion

Flange Diameter

Between 7.474 inches and 7.496 inches

Taper Length

1.250 inches

Taper Minor Diameter

5.500 inches

Taper Major Diameter

6.250 inches

Body Inside Diameter

5.500 inches

Flange Seat To Disk End Height

0.875 inches

Under Flange Height

1.063 inches

Seat Angle In Deg

45.000

Seal Accommodation Type

Grooved

Thready Qty Per Inch (tpi)

8 single threaded portion

Thread Size

7.000 inches single threaded portion

Seating Surface Shape

Angular

Material

Stainless steel

Style Designator

Threaded flanged

Thread Series Designator

Uns single threaded portion

NSN

4820-00-348-2957

Part Number

40G903

Description

Seat,valve

CAGE

53553

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 40G903 NSN 4820-00-348-2957

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:

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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