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Safety Relief Valve NSN 4820-01-171-4392

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 4820-01-171-4392 NSN: 4820-01-171-4392

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Features and Characteristics

Pipe Size Accommodated
0.500 inches 1st end
Flow Control Device
Disk
Bonnet Type
Inside spring
Bonnet Attachment Method
Bolted
Disk Loading Method
Spring
Connection Style
G31 gasket seal (pipe) 1st end
Valve Operation Method
Automatic
Connection Type
Unthreaded internal pipe 1st end
Adjustable Pressure Range
+45.0/+55.0 pounds per square inch
Criticality Code Justification
Zzzy
Material
Nickel alloy 400 stem or nickel alloy r-405 stem
Style Designator
Err-090
Reference Number Differentiating Characteristics
Cleaned iaw mil-i-52211
FSC
4820 Nonpowered Valves
NIIN
011714392
NSN
4820011714392

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
20210H51M
Cage Code:
15187
Status:
A
MSDS:
Part Number:
20210H51MCP
Cage Code:
03950
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 4820-01-171-4392
What are the manufacturers of nsn 4820011714392?
Does this nsn 4820011714392 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820011714392
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 4820011714392 contain any precious metals?
No precious metal content.
Does nsn 4820011714392 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820011714392?
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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