Model: A-591

Valve Seat

Properties:

Flange Diameter

2.625 inches

Body Inside Diameter

Between 1.500 inches and 1.505 inches

Flange Seat To Disk End Height

0.125 inches

Under Flange Height

0.625 inches

Seat Angle In Deg

45.000

Seating Surface Shape

Angular

Material

Steel

Material Specification

Qq-s-763, class 303 federal specification single material response

Style Designator

Threaded flanged

NSN

4820-00-564-6805

Part Number

A-591

Description

Seat,valve

CAGE

0BR59

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 A-591 NSN 4820-00-564-6805

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:

051080

UFC:

29300

LTL:

RATING VARIABLE

LCL:

WCC:

594

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