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Safety Relief Valve NSN 4820-00-289-1840

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 4820-00-289-1840 NSN: 4820-00-289-1840

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Features and Characteristics

Pipe Size Accommodated
0.750 inches 1st end
Thread Direction
Right-hand all ends
Flow Control Device
Ball
Disk Loading Method
Spring
Maximum Operating Temp
400.0 degrees fahrenheit single response
Connection Style
Plain, optional en (pipe) all ends
Valve Operation Method
Automatic
Connection Type
Threaded internal pipe all ends
Features Provided
Pressure tight outlet side
Thready Qty Per Inch (tpi)
14 1st end
Adjustable Pressure Range
+101.0/+300.0 pounds per square inch
Maximum Operating Pressure
300.0 pounds per square inch single response
Thread Size
0.750 inches all ends
Material
Stainless steel flow control device
Media For Which Designed
Water, fresh single response
Style Designator
Angle
Thread Series Designator
Npt all ends
FSC
4820 Nonpowered Valves
NIIN
002891840
NSN
4820002891840

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
TYPE R,3/4INCH
Cage Code:
64042
Status:
A
MSDS:
Part Number:
NY460-484-6PC11
Cage Code:
23230
Status:
A
MSDS:
Part Number:
S5101-880459ALT6PC11
Cage Code:
53711
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 4820-00-289-1840
What are the manufacturers of nsn 4820002891840?
Does this nsn 4820002891840 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820002891840
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 4820002891840 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820002891840 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820002891840?
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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