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Safety Relief Valve NSN 4820-00-287-3400

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 4820-00-287-3400 NSN: 4820-00-287-3400

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Features and Characteristics

Pipe Size Accommodated
1.000 inches 2nd end
Thread Direction
Right-hand 1st end
Flow Control Device
Disk
Bonnet Type
Inside spring
Bonnet Attachment Method
Threaded
Disk Loading Method
Spring
Renewable Seat Ring Type
Bolted
Maximum Operating Temp
450.0 degrees fahrenheit single response
Connection Style
Plain, optional en (pipe) 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded internal pipe 2nd end
Features Provided
Pressure tight outlet side
Thready Qty Per Inch (tpi)
11-1/2 2nd end
Adjustable Pressure Range
+29.0/+40.0 pounds per square inch
Maximum Operating Pressure
300.0 pounds per square inch single response
Thread Size
1.000 inches 2nd end
Material
Rubber butadiene-acrylonitrile class nbr flow control device
Media For Which Designed
Water-oil-gas 2nd response
Style Designator
Angle
Thread Series Designator
Npt 1st end
FSC
4820 Nonpowered Valves
NIIN
002873400
NSN
4820002873400

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
118-1-40
Cage Code:
35795
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 4820-00-287-3400
What are the manufacturers of nsn 4820002873400?
Does this nsn 4820002873400 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820002873400
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 4820002873400 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820002873400 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820002873400?
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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