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Safety Relief Valve NSN 4820-00-477-5645

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 4820-00-477-5645 NSN: 4820-00-477-5645

Features and Characteristics

Pipe Size Accommodated
0.250 inches 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Disk
Disk Loading Method
Spring
Maximum Operating Temp
60.0 degrees fahrenheit single response
End Application
Grumman aerospace a10 aircraft
Connection Style
Plain (pipe) 1st end
Valve Operation Method
Manual
Connection Type
Threaded external pipe 1st end
Thready Qty Per Inch (tpi)
18 1st end
Maximum Operating Pressure
320.0 pounds per square inch single response
Thread Size
0.250 inches 1st end
Opening Pressure Setting
320.0 pounds per square inch
Material
Copper alloy
Media For Which Designed
Air single response
Style Designator
Angle
Thread Series Designator
Npt 1st end
FSC
4820 Nonpowered Valves
NIIN
004775645
NSN
4820004775645

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
48A-1/4-320
Cage Code:
01343
Status:
A
MSDS:
Part Number:
48-320
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 4820-00-477-5645
What are the manufacturers of nsn 4820004775645?
Does this nsn 4820004775645 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820004775645
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 4820004775645 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820004775645 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820004775645?
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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