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Safety Relief Valve NSN 4820-00-125-7902

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 4820-00-125-7902 NSN: 4820-00-125-7902

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Features and Characteristics

Pipe Size Accommodated
0.250 inches 2nd end
Thread Class
3a 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Bonnet Type
Inside spring
Bonnet Attachment Method
Integral
Disk Loading Method
Spring
Maximum Operating Temp
225.0 degrees fahrenheit 2nd response
Connection Style
Plain (pipe) 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded external tube 1st end
Features Provided
Valve stem lock shield and bonnet packing and pressure tight outlet side
Thready Qty Per Inch (tpi)
18 1st end
Adjustable Pressure Range
+1500.0/+2750.0 pounds per square inch
Maximum Operating Pressure
2750.0 pounds per square inch single response
Thread Size
0.562 inches 1st end
Seat Angle
37.0 degrees 1st end
Outside Diameter Tube Accommodated
0.375 inches 1st end
Material
Stainless steel flow control device
Media For Which Designed
Water-oil-gas single response
Surface Treatment
Anodize
Surface Treatment Specification
Mil-a-8625, type 2 military specification single treatment response
Style Designator
Angle
Thread Series Designator
Unf 1st end
FSC
4820 Nonpowered Valves
NIIN
001257902
NSN
4820001257902

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
623XB-11-6-2
Cage Code:
09990
Status:
A
MSDS:
Part Number:
623XB11-6-2
Cage Code:
86768
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 4820-00-125-7902
What are the manufacturers of nsn 4820001257902?
Does this nsn 4820001257902 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820001257902
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 4820001257902 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820001257902 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820001257902?
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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