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Safety Relief Valve NSN 4820-00-803-1222

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 4820-00-803-1222 NSN: 4820-00-803-1222

Features and Characteristics

Thread Class
3a 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Disk Loading Method
Spring
Connection Style
Plain (tube) all ends
Valve Operation Method
Automatic
Connection Type
Threaded external tube 1st end
Thready Qty Per Inch (tpi)
20 1st end
Adjustable Pressure Range
+430.0/+650.0 pounds per square inch
Maximum Operating Pressure
3100.0 pounds per square inch single response
Thread Size
0.437 inches 1st end
Seat Angle
37.5 degrees 1st end
Opening Pressure Setting
430.0 pounds per square inch
Outside Diameter Tube Accommodated
0.250 inches 1st end
Style Designator
Angle
Thread Series Designator
Unf 1st end
FSC
4820 Nonpowered Valves
NIIN
008031222
NSN
4820008031222

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
649X6-4
Cage Code:
86768
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 4820-00-803-1222
What are the manufacturers of nsn 4820008031222?
Does this nsn 4820008031222 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820008031222
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 4820008031222 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820008031222 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820008031222?
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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