Safety Relief Valve NSN 4820-00-072-0579

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: 4820-00-072-0579

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Features and Characteristics

Pipe Size Accommodated

0.500 inches 2nd end

Thread Direction

Right-hand 1st end

Flow Control Device

Poppet

Disk Loading Method

Spring

Renewable Seat Ring Type

Pressed-in

Maximum Operating Temp

250.0 degrees fahrenheit single response

Connection Style

Plain (pipe) 1st endplain, optional en (pipe) 2nd end

Valve Operation Method

Automatic

Connection Type

Threaded external pipe 1st endthreaded internal pipe 2nd end

Features Provided

Pressure tight outlet side

Adjustable Pressure Range

+10.0/+400.0 pounds per square inch

Maximum Operating Pressure

2500.0 pounds per square inch 1st response

Thread Size

0.500 inches 2nd end

Opening Pressure Setting

50.0 pounds per square inch

Material

Copper alloy

Media For Which Designed

Air 1st responseacetylene 2nd responseammonia, gaseous 3rd responserefrigerant 12 4th responsehydrogen 5th response

Style Designator

Straight through note: to be used for valve bodies of separable sections.

Thread Series Designator

Npt 1st end

FSC

4820 Nonpowered Valves

NIIN

000720579

NSN

4820000720579

Manufacturer Part Numbers

Part numbers registered to this national stock number.

Part Number

Cage

Status

MSDS

Part Number:

5159B4MP50

Cage Code:

91816

Status:

MSDS:

Part Number:

3200559-1

Cage Code:

11243

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 4820-00-072-0579

What are the manufacturers of nsn 4820000720579?

Circor Aerospace, Inc. (91816)
Cosmodyne, Llc (11243)

Does this nsn 4820000720579 have a shelf life?
No. This NSN does not have an applicable shelf life.

What is the formal definition of nsn 4820000720579
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 4820000720579 contain any precious metals?
Precious metal content is unknown.

Does nsn 4820000720579 contain any hazardous materials?
No MSDS. No hazardous material.

What is the ESD classification of nsn 4820000720579?
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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