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Safety Relief Valve NSN 4820-01-505-8743

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 4820-01-505-8743 NSN: 4820-01-505-8743

Features and Characteristics

Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Maximum Operating Temp
250.0 degrees fahrenheit single response
Connection Style
G46b plain (pipe) 1st end
Valve Operation Method
Automatic
Connection Type
Threaded external pipe 1st end
Adjustable Pressure Range
+0.5/+150.0 pounds per square inch
Maximum Operating Pressure
200.0 pounds per square inch single response
Thread Size
0.250 inches 1st end
Opening Pressure Setting
12.0 pounds per square inch
Part Name Assigned By Controlling Agency
Popoff valve
Special Features
1.200 in. length; 0.625 in. Hex.
Material
Steel comp 303 body
Media For Which Designed
Hydrogen 5th response
Style Designator
Err-090
Thread Series Designator
Npt all ends
FSC
4820 Nonpowered Valves
NIIN
015058743
NSN
4820015058743

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
559T-2M-12
Cage Code:
91816
Status:
A
MSDS:
Part Number:
7326559 FIND 20
Cage Code:
53711
Status:
A
MSDS:
Part Number:
7326559
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 4820-01-505-8743
What are the manufacturers of nsn 4820015058743?
Does this nsn 4820015058743 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820015058743
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 4820015058743 contain any precious metals?
No precious metal content.
Does nsn 4820015058743 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820015058743?
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
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