Pressure And Temper Relief Valve NSN 4820-00-761-1981

Item Description

A valve designed to release under excessive pressure and/or excessive temperature by opening at a predetermined pressure and/or temperature. Thermostatically operated valves close when the pressure is relieved or the temperature is reduced. Fusible plug valves require replacement of the plug. See also valve, safety relief and valve, regulating. Temperature.

NSN: 4820-00-761-1981

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Features and Characteristics

Body Material

Bronze

Outside Surface Treatment

Any acceptable

Body Style

Angle give "adqm" and "adqn" only if flanged one or two ends

Stem Material

Steel, corrosion resisting

Tempurature Rating

180.0 degrees fahrenheit

Media For Which Designed

Water, fresh

First End Connection Type

Unthreaded internal pipe

First End Style Designator

Plain

First End Pipe Size Accommodated

0.500 inches

Second End Relationship With First End

Not identical

Second End Connection Type

Unthreaded internal pipe

Second End Style Designator

Plain

Second End Pipe Size Accommodated

0.250 inches

Seat Material

Bronze

Flow Control Device

Poppet

Flow Control Device Material

Bronze

End Connection Quantity

Opening Pressure Setting

80.0 pounds per square inch

Tempurature Adjustability

Not adjustable

Tempurature Control Device Type

Fusible

FSC

4820 Nonpowered Valves

NIIN

007611981

NSN

4820007611981

Manufacturer Part Numbers

Part numbers registered to this national stock number.

Part Number

Cage

Status

MSDS

Part Number:

HSRV-1-85

Cage Code:

19857

Status:

MSDS:

Part Number:

HSRV-1

Cage Code:

19857

Status:

MSDS:

Part Number:

1771093

Cage Code:

19857

Status:

MSDS:

Part Number:

17723-7

Cage Code:

19857

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 4820-00-761-1981

What are the manufacturers of nsn 4820007611981?

Electric Heater Company, The (19857)

Does this nsn 4820007611981 have a shelf life?
No. This NSN does not have an applicable shelf life.

What is the formal definition of nsn 4820007611981
A valve designed to release under excessive pressure and/or excessive temperature by opening at a predetermined pressure and/or temperature. thermostatically operated valves close when the pressure is relieved or the temperature is reduced. fusible plug valves require replacement of the plug. see also valve, safety relief and valve, regulating. temperature.

Does nsn 4820007611981 contain any precious metals?
Precious metal content is unknown.

Does nsn 4820007611981 contain any hazardous materials?
No MSDS. No hazardous material.

What is the ESD classification of nsn 4820007611981?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)

INC

FIIG

App. Key

Cond. Code

Status

INC:

16996

FIIG:

A07100

App. Key:

Cond. Code:

Status:

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