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Safety Relief Valve NSN 4820-00-497-7444

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 4820-00-497-7444 NSN: 4820-00-497-7444

Features and Characteristics

Thread Class
3b 2nd end
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
Gasket sea (boss) 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded internal boss 2nd end
Features Provided
Pressure tight outlet side
Adjustable Pressure Range
+240.0/+360.0 pounds per square inch
Maximum Operating Pressure
2400.0 pounds per square inch single response
Thread Size
0.562 inches 2nd end
Seat Angle
37.0 degrees 1st end
Opening Pressure Setting
300.0 pounds per square inch
Outside Diameter Tube Accommodated
0.375 inches 1st end
Material
Steel comp 303 body
Material Specification
Aisi 303/sae 30303 assn standard single material response body
Style Designator
Straight through note: to be used for valve bodies of one section only.
Thread Series Designator
Unjf all ends
FSC
4820 Nonpowered Valves
NIIN
004977444
NSN
4820004977444

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
5120T-6TB-300
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 4820-00-497-7444
What are the manufacturers of nsn 4820004977444?
Does this nsn 4820004977444 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820004977444
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 4820004977444 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820004977444 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820004977444?
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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