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Safety Relief Valve NSN 4820-00-552-3508

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 4820-00-552-3508 NSN: 4820-00-552-3508

Features and Characteristics

Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Bonnet Type
Inside screw
Bonnet Attachment Method
Threaded
Disk Loading Method
Spring
Maximum Operating Temp
225.0 degrees fahrenheit single response
Connection Style
Plain, optional en (pipe) 1st end
Valve Operation Method
Automatic
Connection Type
Threaded internal pipe 1st end
Features Provided
Pressure tight outlet side
Maximum Operating Pressure
3100.0 pounds per square inch single response
Thread Size
0.250 inches 2nd end
Opening Pressure Setting
200.0 pounds per square inch
Special Features
The end connection identified above as the second end is the valve inlet
Material
Steel comp 416 flow control device
Material Specification
Qq-b-626, alloy 360 federal specification single material response body
Media For Which Designed
Fuel/oil, hydrocarbon 3rd response
Style Designator
Angle
Thread Series Designator
Anpt 2nd end
FSC
4820 Nonpowered Valves
NIIN
005523508
NSN
4820005523508

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
631B-4-1/4-2
Cage Code:
09990
Status:
A
MSDS:
Part Number:
631B4 1-4 2
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 4820-00-552-3508
What are the manufacturers of nsn 4820005523508?
Does this nsn 4820005523508 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820005523508
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 4820005523508 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820005523508 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820005523508?
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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