Model: 20689PC20

Valve Seat

Properties:

Thread Class

2a first threaded portion

Thread Class

2a second threaded portion

Overall Height

1.250 inches

Body Inside Diameter

3.500 inches

Seat Angle In Deg

43.000

Thready Qty Per Inch (tpi)

11-1/2 first threaded portion

Thready Qty Per Inch (tpi)

11-1/2 second threaded portion

Thread Size

4.012 inches first threaded portion

Thread Size

4.337 inches second threaded portion

Seating Surface Shape

Angular

Material

Stainless steel

Material Specification

Astm a351 gr.Cf-8m assn standard single material response seat

Style Designator

Double flanged

Thread Series Designator

Uns first threaded portion

Thread Series Designator

Uns second threaded portion

NSN

4820-00-630-5606

Part Number

20689PC20

Description

Seat,valve

CAGE

14959

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 20689PC20 NSN 4820-00-630-5606

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:

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