Safety Relief Valve NSN 4820-00-824-0372

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: 4820-00-824-0372

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Features and Characteristics

Thread Class

3a 1st end

Thread Direction

Right-hand 1st end

Flow Control Device

Poppet

Disk Loading Method

Spring

Maximum Operating Temp

275.0 degrees fahrenheit single response

Connection Style

G63 beaded (hose) 2nd end

Valve Operation Method

Automatic

Connection Type

Unthreaded external hose 2nd end

Maximum Operating Pressure

225.0 pounds per square inch single response

Thread Size

0.562 inches 1st end

Seat Angle

37.0 degrees 1st end

Opening Pressure Setting

255.0 pounds per square inch

Inside Diameter Hose Accommodated

0.250 inches 2nd end

Outside Diameter Tube Accommodated

0.375 inches 1st end

Material

Steel comp 303 flow control device and rubber chloroprene class cr flow control device

Material Specification

Qq-a-225/6, alloy 2024, t4 federal specification single material response seat

Media For Which Designed

Water-oil-gas single response

Surface Treatment

Anodize

Surface Treatment Specification

Mil-a-8625, type 1 military specification single treatment response

Style Designator

Err-090

Thread Series Designator

Unf 1st end

FSC

4820 Nonpowered Valves

NIIN

008240372

NSN

4820008240372

Manufacturer Part Numbers

Part numbers registered to this national stock number.

Part Number

Cage

Status

MSDS

Part Number:

H353

Cage Code:

06239

Status:

MSDS:

Part Number:

579R188H01

Cage Code:

97942

Status:

MSDS:

Part Number:

579R188

Cage Code:

97942

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 4820-00-824-0372

What are the manufacturers of nsn 4820008240372?

Ausco,inc. (06239)
Northrop Grumman Systems Corporation (97942)

Does this nsn 4820008240372 have a shelf life?
No. This NSN does not have an applicable shelf life.

What is the formal definition of nsn 4820008240372
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 4820008240372 contain any precious metals?
Precious metal content is unknown.

Does nsn 4820008240372 contain any hazardous materials?
No MSDS. No hazardous material.

What is the ESD classification of nsn 4820008240372?
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
Quality Inspected Parts
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