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Safety Relief Valve NSN 4820-00-844-8481

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 4820-00-844-8481 NSN: 4820-00-844-8481

Features and Characteristics

Pipe Size Accommodated
0.500 inches 2nd end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Bonnet Type
Inside spring
Bonnet Attachment Method
Pressure seal, ring type
Renewable Seat Ring Type
Pressed-in
Maximum Operating Temp
225.0 degrees fahrenheit single response
Connection Style
G9 plain, optional en (pipe) 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded internal pipe 2nd end
Features Provided
Pressure tight outlet side
Adjustable Pressure Range
+4.0/+15.0 pounds per square inch
Maximum Operating Pressure
50.0 pounds per square inch single response
Thread Size
0.500 inches 2nd end
Opening Pressure Setting
10.0 pounds per square inch
Material
Copper alloy
Style Designator
Err-090
Thread Series Designator
Anpt 2nd end
FSC
4820 Nonpowered Valves
NIIN
008448481
NSN
4820008448481

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
636-1 1-2
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 4820-00-844-8481
What are the manufacturers of nsn 4820008448481?
Does this nsn 4820008448481 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820008448481
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 4820008448481 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820008448481 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820008448481?
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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  •   Certificate of Conformance
  •   Quality Inspected Parts
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