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Safety Relief Valve NSN 4820-00-202-7481

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 4820-00-202-7481 NSN: 4820-00-202-7481

Features and Characteristics

Thread Direction
Right-hand all ends
Flow Control Device
Disk
Disk Loading Method
Spring
Renewable Seat Ring Type
Retaining screw
Maximum Operating Temp
406.0 degrees fahrenheit 2nd response
Connection Style
Plain, optional en (pipe) 2nd end
Valve Operation Method
Automatic or manual
Connection Type
Threaded internal pipe 2nd end
Features Provided
Pressure tight outlet side
Maximum Operating Pressure
250.0 pounds per square inch 2nd response
Thread Size
0.750 inches all ends
Opening Pressure Setting
350.0 pounds per square inch
Material
Copper alloy
Media For Which Designed
Air 1st response
Style Designator
Angle
Thread Series Designator
Npt all ends
FSC
4820 Nonpowered Valves
NIIN
002027481
NSN
4820002027481

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
23-M 3/4 350PSI
Cage Code:
01343
Status:
A
MSDS:
Part Number:
M23A
Cage Code:
01343
Status:
A
MSDS:
Part Number:
M23MA
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 4820-00-202-7481
What are the manufacturers of nsn 4820002027481?
Does this nsn 4820002027481 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820002027481
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 4820002027481 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820002027481 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820002027481?
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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  •   Certificate of Conformance
  •   Quality Inspected Parts
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