Safety Relief Valve NSN 4820-01-264-8385

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: 4820-01-264-8385

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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

4 all ends

Maximum Operating Temp

650.0 degrees fahrenheit 1st response400.0 degrees fahrenheit 2nd response

Valve Operation Method

Automatic

Flange Shape

Round with holes all ends

Connection Type

Flange all ends

Valve Size

0.750 inches

Adjustable Pressure Range

+156.0/+186.0 pounds per square inch

Maximum Operating Pressure

125.0 pounds per square inch 1st response200.0 pounds per square inch 2nd response

Outside Diameter

4.250 inches 1st end3.875 inches 2nd end

Thickness

0.562 inches 1st end0.688 inches 2nd end

First Connection Face To Centerline Distance

3.312 inches

Bolt Hole Diameter

0.625 inches all ends

Second Connection Face To Centerline Distance

3.250 inches

Bolt Circle Diameter

3.125 inches 1st end2.750 inches 2nd end

Flange Face Design

Raised straight all ends

Raised Face Height

0.062 inches 1st end0.250 inches 2nd end

Raised Face Diameter

2.000 inches 1st end1.688 inches 2nd end

Material

Steel bodystainless steel flow control devicestainless steel seatstainless steel stem

Style Designator

Err-090

FSC

4820 Nonpowered Valves

NIIN

012648385

NSN

4820012648385

Manufacturer Part Numbers

Part numbers registered to this national stock number.

Part Number

Cage

Status

MSDS

Part Number:

NMP15440PTI0N 1

Cage Code:

75954

Status:

MSDS:

Part Number:

DX10C/NMP1544-15

Cage Code:

15187

Status:

MSDS:

Part Number:

NMP1544-OPT.1

Cage Code:

15187

Status:

MSDS:

Part Number:

DX10C/NMP1544-156T186

Cage Code:

75954

Status:

MSDS:

Part Number:

NMP-1544

Cage Code:

75954

Status:

MSDS:

Part Number:

DX10CNMP1544OPT1-156T186RG

Cage Code:

75954

Status:

MSDS:

Part Number:

MNP-1544

Cage Code:

01343

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 4820-01-264-8385

What are the manufacturers of nsn 4820012648385?

Does this nsn 4820012648385 have a shelf life?
No. This NSN does not have an applicable shelf life.

What is the formal definition of nsn 4820012648385
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 4820012648385 contain any precious metals?
No precious metal content.

Does nsn 4820012648385 contain any hazardous materials?
No MSDS. No hazardous material.

What is the ESD classification of nsn 4820012648385?
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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