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Safety Relief Valve NSN 4820-00-554-9951

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 4820-00-554-9951 NSN: 4820-00-554-9951

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Features and Characteristics

Pipe Size Accommodated
0.750 inches 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Disk
Bonnet Type
Inside spring
Bonnet Attachment Method
Threaded
Disk Loading Method
Spring
Maximum Operating Temp
300.0 degrees fahrenheit single response
Connection Style
Plain, optional en (pipe) 2nd end
Valve Operation Method
Automatic or manual
Connection Type
Threaded internal pipe 2nd end
Features Provided
Valve stem lock shield and pressure tight outlet side
Maximum Operating Pressure
6500.0 pounds per square inch single response
Thread Size
0.750 inches 1st end
Opening Pressure Setting
3650.0 pounds per square inch
Material
Stainless steel stem
Media For Which Designed
Gas, inert 2nd response
Style Designator
Angle
Thread Series Designator
Npt 1st end
FSC
4820 Nonpowered Valves
NIIN
005549951
NSN
4820005549951

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
189
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 4820-00-554-9951
What are the manufacturers of nsn 4820005549951?
Does this nsn 4820005549951 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820005549951
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 4820005549951 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820005549951 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820005549951?
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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