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Safety Relief Valve NSN 4820-01-206-3521

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 4820-01-206-3521 NSN: 4820-01-206-3521

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Major End Items End items to which 4820-01-206-3521 is a component of

  • CDF T-39 Aircraft
  • CQF Fire/crash P15 Truck
  • SGM Aircraft Crash/structure Firefighting (a/332p-19a) Truck
  • FBT Fire Fighting Equipment

Features and Characteristics

Pipe Size Accommodated
3.000 inches 1st end
Flow Control Device
Poppet
Disk Loading Method
Spring
Valve Discharge Flow Rate
845.0 gallons per minute
Connection Style
Err-090 1st end
Valve Operation Method
Automatic
Connection Type
Unthreaded external pipe 1st end
Opening Pressure Setting
250.0 pounds per square inch
Special Features
Designed to function with pilot valve 4820011611323
Material
Copper alloy body or iron cast body
Style Designator
Err-090
FSC
4820 Nonpowered Valves
NIIN
012063521
NSN
4820012063521

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
538-1040-10-0
Cage Code:
26840
Status:
A
MSDS:
Part Number:
538-1041-05
Cage Code:
26840
Status:
A
MSDS:
Part Number:
1440310
Cage Code:
45152
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 4820-01-206-3521
What are the manufacturers of nsn 4820012063521?
Does this nsn 4820012063521 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820012063521
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 4820012063521 contain any precious metals?
No precious metal content.
Does nsn 4820012063521 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820012063521?
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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