Model: 1661-D PART 1661-D-19

Valve Seat

Special Features:

4 lugs; temperature regulating valve type s, sz 1.250 in.; lower seat

Properties:

Thread Class

2a single threaded portion

Flange Diameter

1.625 inches

Body Inside Diameter

1.125 inches

End Application

Nimitz class cvn

Flange Seat To Disk End Height

0.188 inches

Under Flange Height

0.250 inches

Seat Angle In Deg

30.000

Thread Size

1.500 inches single threaded portion

Seating Surface Shape

Angular

Material

Copper alloy seat

Style Designator

Threaded flanged

Thread Series Designator

Unef single threaded portion

NSN

4820-01-456-2316

Part Number

1661-D PART 1661-D-19

Description

Seat,valve

CAGE

75545

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 1661-D PART 1661-D-19 NSN 4820-01-456-2316

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