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Safety Relief Valve NSN 4820-01-449-1691

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 4820-01-449-1691 NSN: 4820-01-449-1691

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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
400.0 degrees fahrenheit single response
End Application
Support equipmen (se) , b-2 bomber aircraft
Connection Style
G9 plain, optional en (pipe) 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded internal pipe 2nd end
Maximum Operating Pressure
2400.0 pounds per square inch single response
Thread Size
0.375 inches all ends
Opening Pressure Setting
2000.0 pounds per square inch
Special Features
Incl manual override ring handle design
Material
Steel comp 303 seat
Media For Which Designed
Fuel/oil, hydrocarbon single response
Style Designator
Err-090
Thread Series Designator
Npt all ends
Furnished Items And Quantity
1 handle
FSC
4820 Nonpowered Valves
NIIN
014491691
NSN
4820014491691

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
5132T-3MP-2000
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 4820-01-449-1691
What are the manufacturers of nsn 4820014491691?
Does this nsn 4820014491691 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820014491691
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 4820014491691 contain any precious metals?
No precious metal content.
Does nsn 4820014491691 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820014491691?
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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