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Safety Relief Valve NSN 4820-00-699-0521

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 4820-00-699-0521 NSN: 4820-00-699-0521

Features and Characteristics

Pipe Size Accommodated
0.125 inches 2nd end
Thread Class
3b 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Disk Loading Method
Spring
Connection Style
Plain (pipe) 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded external tube 1st end
Thready Qty Per Inch (tpi)
27 2nd end
Thread Size
0.437 inches 1st end
Seat Angle
37.0 degrees 1st end
Outside Diameter Tube Accommodated
0.250 inches 1st end
Material
Aluminum alloy 2014 body
Material Specification
Qq-a-225/4, alloy2014 federal specification single material response body
Surface Treatment
Anodize
Style Designator
Angle
Thread Series Designator
Unf 1st end
FSC
4820 Nonpowered Valves
NIIN
006990521
NSN
4820006990521

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
K802258
Cage Code:
58163
Status:
A
MSDS:
Part Number:
831703
Cage Code:
32762
Status:
A
MSDS:
Part Number:
802258
Cage Code:
0KDP7
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 4820-00-699-0521
What are the manufacturers of nsn 4820006990521?
Does this nsn 4820006990521 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820006990521
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 4820006990521 contain any precious metals?
No precious metal content.
Does nsn 4820006990521 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820006990521?
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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