Safety Relief Valve NSN 4820-01-280-8941

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: 4820-01-280-8941

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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

8 2nd end

Maximum Operating Temp

800.0 degrees fahrenheit single response

Valve Operation Method

Automatic

Flange Shape

Round with holes all ends

Connection Type

Flange all ends

Valve Size

4.000 inches

Adjustable Pressure Range

+699.0/+778.0 pounds per square inch

Maximum Operating Pressure

1650.0 pounds per square inch single response

Outside Diameter

12.250 inches 2nd end

Thickness

2.125 inches 2nd end

First Connection Face To Centerline Distance

9.250 inches

Bolt Hole Diameter

1.375 inches 2nd end

Second Connection Face To Centerline Distance

7.812 inches

Bolt Circle Diameter

9.500 inches 2nd end

Flange Face Design

Raised straight all ends

Raised Face Height

0.688 inches 2nd end

Raised Face Diameter

8.500 inches 1st end

Material

Stainless steel stem

Style Designator

Err-090

FSC

4820 Nonpowered Valves

NIIN

012808941

NSN

4820012808941

Manufacturer Part Numbers

Part numbers registered to this national stock number.

Part Number

Cage

Status

MSDS

Part Number:

NMP-1567 699T778PSI

Cage Code:

15187

Status:

MSDS:

Part Number:

NMP-1567

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 4820-01-280-8941

What are the manufacturers of nsn 4820012808941?

Does this nsn 4820012808941 have a shelf life?
No. This NSN does not have an applicable shelf life.

What is the formal definition of nsn 4820012808941
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 4820012808941 contain any precious metals?
No precious metal content.

Does nsn 4820012808941 contain any hazardous materials?
No MSDS. No hazardous material.

What is the ESD classification of nsn 4820012808941?
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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