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Safety Relief Valve NSN 4820-01-371-8806

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 4820-01-371-8806 NSN: 4820-01-371-8806

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Features and Characteristics

Thread Class
3a 2nd end
Thread Direction
Right-hand all ends
Flow Control Device
Disk
Maximum Operating Temp
300.0 degrees fahrenheit single response
Connection Style
G46b plain (pipe) 1st endg42 flared (tube) 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded external pipe 1st endthreaded external tube 2nd end
Thready Qty Per Inch (tpi)
14 2nd end
Thread Size
0.500 inches 1st end0.875 inches 2nd end
Seat Angle
37.0 degrees 2nd end
Opening Pressure Setting
300.0 pounds per square inch
Material
Copper alloy bodyplastic polytetrafluoroethylene flow control device
Media For Which Designed
Refrigerant 22 single response
Style Designator
Err-090
Thread Series Designator
Npt 1st endunj 2nd end
FSC
4820 Nonpowered Valves
NIIN
013718806
NSN
4820013718806

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
3214-300 SET 300PSI
Cage Code:
58553
Status:
A
MSDS:
Part Number:
90SM-125-0001 ITEM 183
Cage Code:
10855
Status:
A
MSDS:
Part Number:
90SM-125-0001
Cage Code:
10855
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 4820-01-371-8806
What are the manufacturers of nsn 4820013718806?
Does this nsn 4820013718806 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820013718806
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 4820013718806 contain any precious metals?
No precious metal content.
Does nsn 4820013718806 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820013718806?
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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