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Safety Relief Valve NSN 4820-01-420-5231

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 4820-01-420-5231 NSN: 4820-01-420-5231

Features and Characteristics

Thread Direction
Right-hand all ends
Disk Loading Method
Spring
Maximum Operating Temp
400.0 degrees fahrenheit single response
Minimum Operating Temp
-100.0 degrees fahrenheit
End Application
Aircraft, hercules c
Connection Style
G4 gasket sea (boss) 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded internal tube 2nd end
Maximum Operating Pressure
1000.0 pounds per square inch single response
Thread Size
0.250 inches all ends
Seat Angle
37.0 degrees 1st end
Opening Pressure Setting
25.0 pounds per square inch
Outside Diameter Tube Accommodated
0.250 inches 2nd end
Special Features
With polytetrafluoroethylene seal
Material
Stainless steel seat
Media For Which Designed
Water-oil-gas single response
Style Designator
C8 straight through note: to be used for valve bodies of one section only.
Thread Series Designator
Nptf 2nd end
FSC
4820 Nonpowered Valves
NIIN
014205231
NSN
4820014205231

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
5120TP-4TJ-25
Cage Code:
91816
Status:
A
MSDS:
Part Number:
ES9983-01T25
Cage Code:
20418
Status:
A
MSDS:
Part Number:
ES9983
Cage Code:
20418
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 4820-01-420-5231
What are the manufacturers of nsn 4820014205231?
Does this nsn 4820014205231 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820014205231
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 4820014205231 contain any precious metals?
No precious metal content.
Does nsn 4820014205231 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820014205231?
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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