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Safety Relief Valve NSN 4820-00-621-0983

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 4820-00-621-0983 NSN: 4820-00-621-0983

Features and Characteristics

Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Disk Loading Method
Spring
Maximum Operating Temp
450.0 degrees fahrenheit single response
Connection Style
Plain (pipe) 1st endplain, optional en (pipe) 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded external pipe 1st endthreaded internal pipe 2nd end
Maximum Operating Pressure
200.0 pounds per square inch single response
Thread Size
0.250 inches 2nd end
Opening Pressure Setting
16.0 pounds per square inch
Special Features
Inline type
Material
Steel comp 303 flow control device
Material Specification
Aisi 303 assn standard single material response flow control device
Media For Which Designed
Oxygen, gaseous 3rd response
Style Designator
Straight through note: to be used for valve bodies of one section only.
Thread Series Designator
Npt 1st end
FSC
4820 Nonpowered Valves
NIIN
006210983
NSN
4820006210983

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
524T-2M-16
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 4820-00-621-0983
What are the manufacturers of nsn 4820006210983?
Does this nsn 4820006210983 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820006210983
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 4820006210983 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820006210983 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820006210983?
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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