Pressure And Temper Relief Valve NSN 4820-00-207-8821

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: 4820-00-207-8821

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Features and Characteristics

Body Material

Brass

Body Style

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

Tempurature Rating

210.0 degrees fahrenheit

Media For Which Designed

Water, fresh

First End Connection Type

Threaded internal pipe

First End Style Designator

Optional end

First End Pipe Size Accommodated

0.500 inches

First End Thread Direction

Right-hand

Second End Relationship With First End

Not identical

Second End Connection Type

Threaded external pipe

Second End Style Designator

Plain

Second End Pipe Size Accommodated

0.500 inches

Second End Thread Direction

Right-hand

Seat Material

Brass

Flow Control Device

Disk, lift

Flow Control Device Material

Steel, corrosion resisting

End Connection Quantity

Opening Pressure Setting

175.0 pounds per square inch

Adjustable Pressure Range

+75.0/+175.0 pounds per square inch

Bulb Length

4.000 inches

Bulb Diameter

0.812 inches

Tempurature Adjustability

Not adjustable

Tempurature Control Device Type

Fusible

Special Features

Temperature water rating at 50000-btu/hr

FSC

4820 Nonpowered Valves

NIIN

002078821

NSN

4820002078821

Manufacturer Part Numbers

Part numbers registered to this national stock number.

Part Number

Cage

Status

MSDS

Part Number:

540 1-2

Cage Code:

79227

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 4820-00-207-8821

What are the manufacturers of nsn 4820002078821?

Watts Regulator Co (79227)

Does this nsn 4820002078821 have a shelf life?
No. This NSN does not have an applicable shelf life.

What is the formal definition of nsn 4820002078821
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 4820002078821 contain any precious metals?
Precious metal content is unknown.

Does nsn 4820002078821 contain any hazardous materials?
No MSDS. No hazardous material.

What is the ESD classification of nsn 4820002078821?
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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Certificate of Conformance
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