Safety Relief Valve NSN 4820-01-376-9852

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: 4820-01-376-9852

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Features and Characteristics

Pipe Size Accommodated

0.500 inches all ends

Flow Control Device

Disk

Disk Loading Method

Spring

Valve Discharge Flow Rate

434.0 cubic feet per minute

Maximum Operating Temp

165.0 degrees fahrenheit single response

End Application

Seawolf class ssn

Connection Style

Socket err-100

Valve Operation Method

Automatic

Connection Type

Unthreaded internal pipe all ends

Adjustable Pressure Range

+4001.0/+5499.0 pounds per square inch

Maximum Operating Pressure

6000.0 pounds per square inch single response

Criticality Code Justification

Zzzy

Opening Pressure Setting

4900.0 pounds per square inch

Material

Nickel alloy flow control device

Material Specification

Qq-n-281 federal specification single material response stem

Media For Which Designed

Nitrogen, gaseous single response

Style Designator

Err-090

Reference Number Differentiating Characteristics

Cleaned in accordance with mil-i-52211

FSC

4820 Nonpowered Valves

NIIN

013769852

NSN

4820013769852

Manufacturer Part Numbers

Part numbers registered to this national stock number.

Part Number

Cage

Status

MSDS

Part Number:

203578940M

Cage Code:

01343

Status:

MSDS:

Part Number:

211038573

Cage Code:

96169

Status:

MSDS:

Part Number:

203578940M CD S

Cage Code:

03950

Status:

MSDS:

Part Number:

203578940MCP

Cage Code:

03950

Status:

MSDS:

Part Number:

211038573CP

Cage Code:

03950

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 4820-01-376-9852

What are the manufacturers of nsn 4820013769852?

Does this nsn 4820013769852 have a shelf life?
No. This NSN does not have an applicable shelf life.

What is the formal definition of nsn 4820013769852
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 4820013769852 contain any precious metals?
No precious metal content.

Does nsn 4820013769852 contain any hazardous materials?
No MSDS. No hazardous material.

What is the ESD classification of nsn 4820013769852?
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
Quality Inspected Parts
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