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Safety Relief Valve NSN 4820-00-847-8556

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 4820-00-847-8556 NSN: 4820-00-847-8556

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Features and Characteristics

Thread Class
3a 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Disk Loading Method
Spring
Valve Discharge Flow Rate
0.5 gallons per minute
Maximum Operating Temp
275.0 degrees fahrenheit single response
Connection Style
G42 flared (tube) 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded external tube 2nd end
Features Provided
Pressure tight outlet side
Maximum Operating Pressure
120.0 pounds per square inch single response
Thread Size
0.437 inches 1st end
Seat Angle
45.0 degrees 2nd end
Opening Pressure Setting
120.0 pounds per square inch
Material
Aluminum alloy
Media For Which Designed
Hydraulic fluid, phosphate-ester base single response
Surface Treatment
Anodize
Style Designator
Err-090
Thread Series Designator
Unf 2nd end
FSC
4820 Nonpowered Valves
NIIN
008478556
NSN
4820008478556

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
27020
Cage Code:
99643
Status:
A
MSDS:
Part Number:
8-08697-1
Cage Code:
14170
Status:
A
MSDS:
Part Number:
8-08697
Cage Code:
14170
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 4820-00-847-8556
What are the manufacturers of nsn 4820008478556?
Does this nsn 4820008478556 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820008478556
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 4820008478556 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820008478556 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820008478556?
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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