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Safety Relief Valve NSN 4820-01-357-5821

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 4820-01-357-5821 NSN: 4820-01-357-5821

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Features and Characteristics

Thread Direction
Right-hand all ends
Flow Control Device
Disk
Bonnet Type
Packing retaining
Disk Loading Method
Spring
Maximum Operating Temp
300.0 degrees fahrenheit 1st response406.0 degrees fahrenheit 2nd response
Connection Style
G46b plain (pipe) 1st endg9 plain, optional en (pipe) 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded external pipe 1st endthreaded internal pipe 2nd end
Maximum Operating Pressure
300.0 pounds per square inch 1st response250.0 pounds per square inch 2nd response
Thread Size
0.750 inches 1st end1.000 inches 2nd end
Opening Pressure Setting
15.0 pounds per square inch
Material
Copper alloy bodycopper alloy flow control devicecopper alloy seatcopper alloy stem
Media For Which Designed
Air 1st responsesteam 2nd response
Style Designator
Err-090
Thread Series Designator
Npt all ends
Furnished Items And Quantity
1 lever
FSC
4820 Nonpowered Valves
NIIN
013575821
NSN
4820013575821

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
6010E 3/4IN
Cage Code:
1X5W8
Status:
A
MSDS:
Part Number:
6010EDV01-KM0015
Cage Code:
01343
Status:
A
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 4820-01-357-5821
What are the manufacturers of nsn 4820013575821?
Does this nsn 4820013575821 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820013575821
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 4820013575821 contain any precious metals?
No precious metal content.
Does nsn 4820013575821 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820013575821?
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:
AP
Cond. Code:
1
Status:
A

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