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Gaseou Pressure Equalizing Valve NSN 4820-00-990-9043

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 4820-00-990-9043 NSN: 4820-00-990-9043

Features and Characteristics

Body Material
Aluminum alloy, qq-a-268, alloy 2024, t3
Outside Surface Treatment
Anodized, mil-a-8625, type 2
Body Style
Single connection straight thru
Media For Which Designed
Steam
First End Connection Type
Threaded external tube
First End Style Designator
External seat for gasket seal
First End Outside Diameter Tube Accommodated
0.875 inches
First End Thread Class
2a
First End Thread Direction
Right-hand
Seat Material
Aluminum alloy, qq-a-250/4, alloy 2024, t3
First End Seat Angle In Deg
37.5
Flow Control Device
Disk, plug type
End Connection Quantity
1
Valve Venting Design Type
Atmospheric
Valve Relief Design Type
Pressure
FSC
4820 Nonpowered Valves
NIIN
009909043
NSN
4820009909043

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
10215194
Cage Code:
18876
Status:
A
MSDS:
Part Number:
HV194
Cage Code:
15939
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 4820-00-990-9043
What are the manufacturers of nsn 4820009909043?
Does this nsn 4820009909043 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820009909043
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 4820009909043 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820009909043 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820009909043?
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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  •   Certificate of Conformance
  •   Quality Inspected Parts
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