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Gaseou Pressure Equalizing Valve NSN 4820-01-054-3521

Item Description

A valve consisting of a single deadweight loaded disk, or two deadweight loaded disks each with a seperate seat. It is specifically designed for the relief of small pressure and vacuum conditions within a tank or other container to or from the atmosphere. The center of a single deadweight loaded disk may contain a spring loaded disk forming an additional seat or aperture. It may be spring loaded and/or equipped with a manual unloader on either the pressure or vacuum side. Exclude valve, vacuum breaking.

NSN 4820-01-054-3521 NSN: 4820-01-054-3521

Features and Characteristics

Body Material
Polycarbonate, mil-p-993
Maximum Operating Pressure
0.7 pounds per square inch
Body Style
Single connection, straight flow
End Connection Quantity
1
Opening Pressure Setting
0.5 pounds per square inch
Valve Venting Design Type
Atmospheric
Valve Relief Design Type
Pressure and vacuum
FSC
4820 Nonpowered Valves
NIIN
010543521
NSN
4820010543521

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
787AS959
Cage Code:
30003
Status:
A
MSDS:
Part Number:
TA440-787AS959
Cage Code:
08992
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 8481809050
  • NAICS: 332911
  • SITC: 74780
  • Description: Other taps, cocks, valves, etc., nesoi
  • End Use (Code 21180):
    Industrial machines, other

Q & A

Frequently asked questions for NSN 4820-01-054-3521
What are the manufacturers of nsn 4820010543521?
Does this nsn 4820010543521 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820010543521
A valve consisting of a single deadweight loaded disk, or two deadweight loaded disks each with a seperate seat. it is specifically designed for the relief of small pressure and vacuum conditions within a tank or other container to or from the atmosphere. the center of a single deadweight loaded disk may contain a spring loaded disk forming an additional seat or aperture. it may be spring loaded and/or equipped with a manual unloader on either the pressure or vacuum side. exclude valve, vacuum breaking.
Does nsn 4820010543521 contain any precious metals?
No precious metal content.
Does nsn 4820010543521 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820010543521?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
10958
FIIG:
A07100
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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