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Safety Relief Valve NSN 4820-00-421-6984

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 4820-00-421-6984 NSN: 4820-00-421-6984

Features and Characteristics

Pipe Size Accommodated
0.250 inches 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Ball
Bonnet Type
Inside spring
Bonnet Attachment Method
Integral
Disk Loading Method
Spring
Maximum Operating Temp
250.0 degrees fahrenheit single response
End Application
Grummin aerospace a10 aircraft
Connection Style
Plain (pipe) 1st end
Valve Operation Method
Automatic
Connection Type
Threaded external pipe 1st end
Thready Qty Per Inch (tpi)
18 1st end
Maximum Operating Pressure
250.0 pounds per square inch single response
Thread Size
0.250 inches 1st end
Opening Pressure Setting
75.0 pounds per square inch
Material
Stainless steel flow control device
Media For Which Designed
Air single response
Style Designator
Angle
Thread Series Designator
Npt 1st end
FSC
4820 Nonpowered Valves
NIIN
004216984
NSN
4820004216984

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
8Z237
Cage Code:
61156
Status:
A
MSDS:
Part Number:
125SS-2-075
Cage Code:
75336
Status:
A
MSDS:
Part Number:
Z-67-75
Cage Code:
11568
Status:
A
MSDS:
Part Number:
125 1-4 75PSI
Cage Code:
75336
Status:
A
MSDS:
Part Number:
125200
Cage Code:
75336
Status:
A
MSDS:
Part Number:
Z67-70
Cage Code:
11568
Status:
A
MSDS:
Part Number:
125B1-4-75PSI
Cage Code:
75336
Status:
A
MSDS:
Part Number:
Z67
Cage Code:
75336
Status:
A
MSDS:
Part Number:
Z67-75
Cage Code:
75336
Status:
A
MSDS:
Part Number:
125B-2-075
Cage Code:
75336
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 4820-00-421-6984
What are the manufacturers of nsn 4820004216984?
Does this nsn 4820004216984 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820004216984
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 4820004216984 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820004216984 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820004216984?
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
  •   Quality Inspected Parts
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