Model: 20-03540 PIECE 4QA

Valve Seat

Properties:

Seating Surface Shape

Radial

Material

Plastic polyamide flange

Material Specification

Dupont zytel 101 mfr ref single material response flange

Reference Number Differentiating Characteristics

Quality assurance tested for the submarine safety program

NSN

4820-01-143-1574

Part Number

20-03540 PIECE 4QA

Description

Seat,valve

CAGE

03950

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 20-03540 PIECE 4QA NSN 4820-01-143-1574

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