Safety Relief Valve NSN 4820-00-202-8261

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: 4820-00-202-8261

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Features and Characteristics

Flow Control Device

Disk

Bonnet Type

Inside spring

Bonnet Attachment Method

Union

Disk Loading Method

Spring

Bolt Hole Quantity

3 2nd end

Maximum Operating Temp

650.0 degrees fahrenheit single response

Valve Operation Method

Automatic

Flange Shape

Round with holes all ends

Connection Type

Flange all ends

Mounting Facility

Bracket

Features Provided

Pressure tight outlet side

Valve Size

0.500 inches

Adjustable Pressure Range

+678.0/+820.0 pounds per square inch

Maximum Operating Pressure

750.0 pounds per square inch single response

Outside Diameter

3.750 inches 1st end

Thickness

0.562 inches 1st end

First Connection Face To Centerline Distance

3.250 inches

Bolt Hole Diameter

0.562 inches all ends

Second Connection Face To Centerline Distance

3.125 inches

Bolt Circle Diameter

2.625 inches 1st end

Flange Face Design

Plain 2nd end

Raised Face Height

0.250 inches 1st end

Raised Face Diameter

2.000 inches 1st end

Material

Stainless steel stem

Material Specification

Qq-s-763 federal specification single material response stem

Media For Which Designed

Water-oil-gas 2nd response

Style Designator

Angle flanged ends

FSC

4820 Nonpowered Valves

NIIN

002028261

NSN

4820002028261

Manufacturer Part Numbers

Part numbers registered to this national stock number.

Part Number

Cage

Status

MSDS

Part Number:

NMP414MDL-LL3120A

Cage Code:

15187

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 4820-00-202-8261

What are the manufacturers of nsn 4820002028261?

Does this nsn 4820002028261 have a shelf life?
No. This NSN does not have an applicable shelf life.

What is the formal definition of nsn 4820002028261
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 4820002028261 contain any precious metals?
Precious metal content is unknown.

Does nsn 4820002028261 contain any hazardous materials?
No MSDS. No hazardous material.

What is the ESD classification of nsn 4820002028261?
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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