Safety Relief Valve NSN 4820-00-287-2981

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: 4820-00-287-2981

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Features and Characteristics

Thread Direction

Right-hand 2nd end

Flow Control Device

Disk

Bonnet Type

Inside spring

Bonnet Attachment Method

Union

Disk Loading Method

Spring

Bolt Hole Quantity

3 1st end

Connection Style

Plain (pipe) 2nd end

Valve Operation Method

Automatic

Flange Shape

Round with holes 1st end

Connection Type

Threaded external pipe 2nd end

Features Provided

Bonnet packing and pressure tight outlet side

Valve Size

0.500 inches

Maximum Operating Pressure

100.0 pounds per square inch single response

Thread Size

0.500 inches 2nd end

Opening Pressure Setting

10.0 pounds per square inch

Outside Diameter

3.562 inches 1st end

First Connection Face To Centerline Distance

2.656 inches

Bolt Hole Diameter

0.562 inches 1st end

Second Connection Face To Centerline Distance

2.750 inches

Bolt Circle Diameter

2.438 inches 1st end

Flange Face Design

Plain 1st end

Material

Copper alloy

Media For Which Designed

Air 2nd response

Style Designator

Angle flanged ends

Thread Series Designator

Npt 2nd end

FSC

4820 Nonpowered Valves

NIIN

002872981

NSN

4820002872981

Manufacturer Part Numbers

Part numbers registered to this national stock number.

Part Number

Cage

Status

MSDS

Part Number:

S4824H3217973 1

Cage Code:

80064

Status:

MSDS:

Part Number:

1JH1487PC67

Cage Code:

79500

Status:

MSDS:

Part Number:

NMP0703D03S005

Cage Code:

15187

Status:

MSDS:

Part Number:

LL2112C-1/2-10

Cage Code:

01343

Status:

MSDS:

Part Number:

LL2083C1-2-10LB

Cage Code:

75954

Status:

MSDS:

Part Number:

LL2114C-1/2-5-10

Cage Code:

75954

Status:

MSDS:

Part Number:

B2070SPCASSEMBLYA

Cage Code:

75954

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 4820-00-287-2981

What are the manufacturers of nsn 4820002872981?

Does this nsn 4820002872981 have a shelf life?
No. This NSN does not have an applicable shelf life.

What is the formal definition of nsn 4820002872981
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 4820002872981 contain any precious metals?
No precious metal content.

Does nsn 4820002872981 contain any hazardous materials?
No MSDS. No hazardous material.

What is the ESD classification of nsn 4820002872981?
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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