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Safety Relief Valve NSN 4820-01-438-9221

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 4820-01-438-9221 NSN: 4820-01-438-9221

Features and Characteristics

Thread Direction
Right-hand all ends
Maximum Operating Temp
250.0 degrees fahrenheit single response
Minimum Operating Temp
-40.0 degrees fahrenheit
End Application
Aircraft; mcdonnell douglas, fa/18 hornet
Connection Style
G46b plain (pipe) all ends
Valve Operation Method
Automatic
Connection Type
Threaded external pipe all ends
Thread Size
0.250 inches all ends
Opening Pressure Setting
140.0 pounds per square inch
Special Features
Used in oxygen system application; to be cleaned i.A.W.Mil-c-81302
Material
Steel comp 303 body
Material Specification
Astm a582 assn standard single material response body
Media For Which Designed
Oxygen, gaseous single response
Surface Treatment
Passivate
Surface Treatment Specification
Qq-p-35 federal specification all treatment responses
Style Designator
Err-090
Thread Series Designator
Npt all ends
FSC
4820 Nonpowered Valves
NIIN
014389221
NSN
4820014389221

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
RV05-64-140.0
Cage Code:
91816
Status:
A
MSDS:
Part Number:
7M304S2N1400C
Cage Code:
76301
Status:
A
MSDS:
Part Number:
7M304
Cage Code:
76301
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 4820-01-438-9221
What are the manufacturers of nsn 4820014389221?
Does this nsn 4820014389221 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820014389221
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 4820014389221 contain any precious metals?
No precious metal content.
Does nsn 4820014389221 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820014389221?
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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  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
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