Model: 51187-N-184

Valve Seat

Special Features:

E/i: 4 inch gate valve

Properties:

Thread Class

3a single threaded portion

Overall Height

0.688 inches

Body Outside Diameter

4.813 inches

Body Inside Diameter

4.062 inches

End Application

Strategic sealift conversion ships class

Seat Angle In Deg

30.000

Thready Qty Per Inch (tpi)

12 single threaded portion

Thread Size

4.000 inches single threaded portion

Seating Surface Shape

Angular

Material

Nickel alloy 400 seat or nickel alloy seat

Material Specification

Qq-n-281 anl federal specification single material response seat or astm a494, grade -30h assn standard single material response seat

Style Designator

Plain

Thread Series Designator

Uns single threaded portion

NSN

4820-01-429-8422

Part Number

51187-N-184

Description

Seat,valve

CAGE

76364

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 51187-N-184 NSN 4820-01-429-8422

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:

0.9000lbs

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:

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