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Safety Relief Valve NSN 4820-00-169-0654

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 4820-00-169-0654 NSN: 4820-00-169-0654

Features and Characteristics

Thread Class
3b 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Disk Loading Method
Spring
Maximum Operating Temp
275.0 degrees fahrenheit single response
Connection Style
Gasket sea (boss) 1st end
Valve Operation Method
Automatic
Connection Type
Threaded internal boss 1st end
Thready Qty Per Inch (tpi)
20 1st end
Maximum Operating Pressure
3000.0 pounds per square inch single response
Thread Size
0.437 inches 1st end
Opening Pressure Setting
770.0 pounds per square inch
Outside Diameter Tube Accommodated
0.250 inches 1st end
Material
Aluminum alloy seat
Media For Which Designed
Air single response
Style Designator
Straight through w/baffle
Thread Series Designator
Unjf 1st end
FSC
4820 Nonpowered Valves
NIIN
001690654
NSN
4820001690654

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
72415
Cage Code:
81982
Status:
A
MSDS:
Part Number:
1128SCH403-3
Cage Code:
26512
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 4820-00-169-0654
What are the manufacturers of nsn 4820001690654?
Does this nsn 4820001690654 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820001690654
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 4820001690654 contain any precious metals?
No precious metal content.
Does nsn 4820001690654 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820001690654?
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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