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Safety Relief Valve NSN 4820-00-542-2952

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 4820-00-542-2952 NSN: 4820-00-542-2952

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Features and Characteristics

Flow Control Device
Disk
Bonnet Type
Inside spring
Bonnet Attachment Method
Threaded
Disk Loading Method
Spring
Maximum Operating Temp
200.0 degrees fahrenheit single response
Connection Style
Socket (tube) err-100
Valve Operation Method
Automatic
Connection Type
Unthreaded internal tube all ends
Features Provided
Valve stem lock shield and pressure tight outlet side
Opening Pressure Setting
250.0 pounds per square inch
Outside Diameter Tube Accommodated
0.875 inches all ends
Material
Copper alloy body
Material Specification
Qq-b-613, alloy 260 federal specification single material response flow control device
Media For Which Designed
Refrigerant 12 single response
Style Designator
Angle
Reference Number Differentiating Characteristics
As differentiated by opening pressure setting and valve size
FSC
4820 Nonpowered Valves
NIIN
005422952
NSN
4820005422952

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
5423-250
Cage Code:
28193
Status:
A
MSDS:
Part Number:
5423F12
Cage Code:
28193
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 4820-00-542-2952
What are the manufacturers of nsn 4820005422952?
Does this nsn 4820005422952 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820005422952
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 4820005422952 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820005422952 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820005422952?
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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