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Safety Relief Valve NSN 4820-01-227-1011

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 4820-01-227-1011 NSN: 4820-01-227-1011

Features and Characteristics

Thread Direction
Right-hand all ends
Flow Control Device
Poppet
Bonnet Type
Inside screw
Bonnet Attachment Method
Threaded
Maximum Operating Temp
225.0 degrees fahrenheit single response
Connection Style
G9 plain, optional en (pipe) 1st end
Valve Operation Method
Automatic
Connection Type
Threaded internal pipe 1st end
Adjustable Pressure Range
+10.0 to 50.0 pounds per square inch
Maximum Operating Pressure
3600.0 pounds per square inch single response
Thread Size
0.375 inches all ends
Material
Steel comp 303 flow control device
Media For Which Designed
Hydraulic fluid, mineral base 2nd response
Style Designator
C1 angle
Thread Series Designator
Npt all ends
FSC
4820 Nonpowered Valves
NIIN
012271011
NSN
4820012271011

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
646B-2-3/8-52
Cage Code:
09990
Status:
A
MSDS:
Part Number:
646B-2-3/8-52CP4
Cage Code:
86768
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 4820-01-227-1011
What are the manufacturers of nsn 4820012271011?
Does this nsn 4820012271011 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820012271011
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 4820012271011 contain any precious metals?
No precious metal content.
Does nsn 4820012271011 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820012271011?
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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