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Oxygen Syste Safety Relief Valve NSN 4820-01-312-9421

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 or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It is specifically designed and/or cleaned for oxygen systems. See valve, safety relief.

NSN 4820-01-312-9421 NSN: 4820-01-312-9421

Features and Characteristics

Thread Direction
Right-hand 1st end
Minimum Operating Temp
-320.0 degrees fahrenheit
End Application
Tmu-27/m
Connection Style
G9 plain, optional en (pipe) 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded internal pipe 2nd end
Thread Size
0.750 inches 2nd end
Criticality Code Justification
Feat
Opening Pressure Setting
59.0 pounds per square inch
Special Features
Weapon system essential
Material
Copper alloy body
Media For Which Designed
Oxygen, liquid 2nd response
Style Designator
Err-090
Thread Series Designator
Npt 1st end
FSC
4820 Nonpowered Valves
NIIN
013129421
NSN
4820013129421

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
710EACD-A059
Cage Code:
0D4Y1
Status:
A
MSDS:
Part Number:
508-0049-3-59
Cage Code:
0D4Y1
Status:
A
MSDS:
Part Number:
C30180
Cage Code:
67053
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 4820-01-312-9421
What are the manufacturers of nsn 4820013129421?
Does this nsn 4820013129421 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820013129421
A valve designed to automatically release excessive pressures. it is actuated by static pressure upstream of the valve and is used as a safety or relief valve, and may be set to close at a predetermined pressure. it is not designed for regulation of continuously fluctuating loads. it is specifically designed and/or cleaned for oxygen systems. see valve, safety relief.
Does nsn 4820013129421 contain any precious metals?
No precious metal content.
Does nsn 4820013129421 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820013129421?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
37941
FIIG:
A046B0
App. Key:
AP
Cond. Code:
2
Status:
A

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