Safety Relief Valve NSN 4820-01-451-2693

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: 4820-01-451-2693

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Features and Characteristics

Thread Direction

Right-hand all ends

Flow Control Device

Disk

Disk Loading Method

Spring

Maximum Operating Temp

400.0 degrees fahrenheit single response

Minimum Operating Temp

-20.0 degrees fahrenheit

End Application

Strategic sealift conversion ships class

Connection Style

G9 plain, optional en (pipe) 2nd end

Valve Operation Method

Automatic

Connection Type

Threaded internal pipe 2nd end

Maximum Operating Pressure

2000.0 pounds per square inch single response

Thread Size

1.000 inches 2nd end

Opening Pressure Setting

68.0 pounds per square inch

Special Features

Carbon stee (phosphated) spring; orifice area 0.110 sq.In.

Material

Steel comp 410 stem

Material Specification

Astm a479 assn standard single material response flow control device

Media For Which Designed

Air 1st response

Style Designator

Err-090

Thread Series Designator

Npt all ends

Furnished Items And Quantity

1 lever

FSC

4820 Nonpowered Valves

NIIN

014512693

NSN

4820014512693

Manufacturer Part Numbers

Part numbers registered to this national stock number.

Part Number

Cage

Status

MSDS

Part Number:

3/4 19110LC-2-CC-MS-33-MT-FT

Cage Code:

16497

Status:

MSDS:

Part Number:

1990

Cage Code:

16497

Status:

MSDS:

Part Number:

1990C-1 X .75 68PSI

Cage Code:

16497

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 4820-01-451-2693

What are the manufacturers of nsn 4820014512693?

Dresser, Inc. (16497)

Does this nsn 4820014512693 have a shelf life?
No. This NSN does not have an applicable shelf life.

What is the formal definition of nsn 4820014512693
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 4820014512693 contain any precious metals?
No precious metal content.

Does nsn 4820014512693 contain any hazardous materials?
No MSDS. No hazardous material.

What is the ESD classification of nsn 4820014512693?
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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