Safety Relief Valve NSN 4820-00-389-7412

Item Description

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes valve (1), relief, pressure and temperature.

NSN: 4820-00-389-7412

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Features and Characteristics

Pipe Size Accommodated

0.250 inches 1st end

Thread Direction

Right-hand 1st end

Flow Control Device

Poppet

Bonnet Type

Inside spring

Bonnet Attachment Method

Integral

Disk Loading Method

Spring

Maximum Operating Temp

250.0 degrees fahrenheit single response

Connection Style

Plain, optional en (pipe) 1st end

Valve Operation Method

Automatic

Connection Type

Threaded internal pipe 1st end

Features Provided

Pressure tight outlet side

Thready Qty Per Inch (tpi)

18 1st end

Adjustable Pressure Range

+420.0/+600.0 pounds per square inch

Thread Size

0.250 inches 1st end

Criticality Code Justification

Zzzy

Opening Pressure Setting

500.0 pounds per square inch

Material

Steel comp 303

Material Specification

66 federal standard single material response

Style Designator

Straight thru

Thread Series Designator

Npt 1st end

Reference Number Differentiating Characteristics

Material will be in accordance with ships parts control center activity hx quality control, manufacturing and testing specifications

FSC

4820 Nonpowered Valves

NIIN

003897412

NSN

4820003897412

Manufacturer Part Numbers

Part numbers registered to this national stock number.

Part Number

Cage

Status

MSDS

Part Number:

5349T2PP500

Cage Code:

91816

Status:

MSDS:

Part Number:

5349T-2PP-500NOM,1/4IN(SPCLN)

Cage Code:

91816

Status:

MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov

Schedule B Number: 8481400000
NAICS: 332911
SITC: 74740
Description: Safety or relief valves
End Use (Code 21180):
Industrial machines, other

Q & A

Frequently asked questions for NSN 4820-00-389-7412

What are the manufacturers of nsn 4820003897412?

Circor Aerospace, Inc. (91816)

Does this nsn 4820003897412 have a shelf life?
No. This NSN does not have an applicable shelf life.

What is the formal definition of nsn 4820003897412
A valve designed to automatically release excessive pressures. it is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. it is not designed for regulation of continuously fluctuating loads. it may be inline or cartridge (manifold) design. excludes valve (1), relief, pressure and temperature.

Does nsn 4820003897412 contain any precious metals?
No precious metal content.

Does nsn 4820003897412 contain any hazardous materials?
No MSDS. No hazardous material.

What is the ESD classification of nsn 4820003897412?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)

INC

FIIG

App. Key

Cond. Code

Status

INC:

05488

FIIG:

A046B0

App. Key:

Cond. Code:

Status:

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Certificate of Conformance
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