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Safety Relief Valve NSN 4820-00-999-8331

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 4820-00-999-8331 NSN: 4820-00-999-8331

Features and Characteristics

Thread Class
3b 2nd end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Bonnet Type
Packing retaining
Disk Loading Method
Spring
Maximum Operating Temp
250.0 degrees fahrenheit single response
Connection Style
G4 gasket sea (boss) 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded internal boss 2nd end
Features Provided
Pressure tight outlet side
Maximum Operating Pressure
200.0 pounds per square inch single response
Thread Size
0.562 inches 2nd end
Seat Angle
37.0 degrees 1st end
Opening Pressure Setting
80.0 pounds per square inch
Outside Diameter Tube Accommodated
0.562 inches 2nd end
Material
Aluminum alloy seat
Media For Which Designed
Acetylene single response
Style Designator
Err-090
Thread Series Designator
Unjf 2nd end
FSC
4820 Nonpowered Valves
NIIN
009998331
NSN
4820009998331

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
559A6TB80
Cage Code:
91816
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 4820-00-999-8331
What are the manufacturers of nsn 4820009998331?
Does this nsn 4820009998331 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820009998331
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 4820009998331 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820009998331 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820009998331?
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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