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Safety Relief Valve NSN 4820-00-044-3891

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 4820-00-044-3891 NSN: 4820-00-044-3891

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Features and Characteristics

Pipe Size Accommodated
0.500 inches 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Stem or disk
Bonnet Type
Inside spring
Bonnet Attachment Method
Pressure seal, ring type
Disk Loading Method
Spring
Valve Discharge Flow Rate
64.0 cubic feet per minute
Connection Style
Plain (pipe) 1st end
Valve Operation Method
Manual
Connection Type
Threaded external pipe 1st end
Thready Qty Per Inch (tpi)
14 1st end
Adjustable Pressure Range
+500.0 to 4000.0 pounds per square inch
Thread Size
0.500 inches all ends
Opening Pressure Setting
500.0 pounds per square inch
Material
Stainless steel seat
Media For Which Designed
Gas, natural 2nd response
Style Designator
Angle
Thread Series Designator
Npt 1st end
FSC
4820 Nonpowered Valves
NIIN
000443891
NSN
4820000443891

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
30-1-2
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 4820-00-044-3891
What are the manufacturers of nsn 4820000443891?
Does this nsn 4820000443891 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820000443891
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 4820000443891 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820000443891 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820000443891?
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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