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Safety Relief Valve NSN 4820-00-814-1957

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 4820-00-814-1957 NSN: 4820-00-814-1957

Features and Characteristics

Pipe Size Accommodated
1.500 inches all ends
Thread Direction
Right-hand all ends
Flow Control Device
Disk
Bonnet Type
Inside spring
Bonnet Attachment Method
Threaded
Disk Loading Method
Spring
Valve Discharge Flow Rate
314.0 gallons per minute
Maximum Operating Temp
200.0 degrees fahrenheit single response
Connection Style
G9 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)
11-1/2 all ends
Maximum Operating Pressure
4000.0 pounds per square inch single response
Thread Size
1.500 inches all ends
Opening Pressure Setting
750.0 pounds per square inch
Material
Copper alloy
Media For Which Designed
Water-oil-gas single response
Style Designator
Err-090
Thread Series Designator
Npt all ends
FSC
4820 Nonpowered Valves
NIIN
008141957
NSN
4820008141957

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
1535-1
Cage Code:
38056
Status:
A
MSDS:
Part Number:
1535-1SIZE1 1-2
Cage Code:
03352
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 4820-00-814-1957
What are the manufacturers of nsn 4820008141957?
Does this nsn 4820008141957 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820008141957
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 4820008141957 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820008141957 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820008141957?
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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