Safety Relief Valve NSN 4820-00-802-2225

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: 4820-00-802-2225

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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

-40.0 degrees fahrenheit 1st response270.0 degrees fahrenheit 2nd response

Connection Style

Flared (tube) 1st end

Valve Operation Method

Automatic

Connection Type

Threaded external tube 1st end

Features Provided

Pressure tight outlet side

Adjustable Pressure Range

+0.0/+200.0 pounds per square inch

Maximum Operating Pressure

200.0 pounds per square inch single response

Thread Size

0.437 inches 1st end

Seat Angle

37.0 degrees 1st end

Opening Pressure Setting

15.0 pounds per square inch

Outside Diameter Tube Accommodated

0.250 inches 1st end

Material

Steel comp 303 stem

Material Specification

Fed standard 66 federal standard single material response stem

Media For Which Designed

Hydrogen 5th response

Style Designator

Straight through note: to be used for valve bodies of one section only.

Thread Series Designator

Unjf 1st end

FSC

4820 Nonpowered Valves

NIIN

008022225

NSN

4820008022225

Manufacturer Part Numbers

Part numbers registered to this national stock number.

Part Number

Cage

Status

MSDS

Part Number:

2187647-1

Cage Code:

49671

Status:

MSDS:

Part Number:

559T-4D-15

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 4820-00-802-2225

What are the manufacturers of nsn 4820008022225?

Lockheed Martin Corp (49671)
Circor Aerospace, Inc. (91816)

Does this nsn 4820008022225 have a shelf life?
No. This NSN does not have an applicable shelf life.

What is the formal definition of nsn 4820008022225
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 4820008022225 contain any precious metals?
Precious metal content is unknown.

Does nsn 4820008022225 contain any hazardous materials?
No MSDS. No hazardous material.

What is the ESD classification of nsn 4820008022225?
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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