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Vent-check Valve NSN 4820-01-285-6146

Item Description

A dual purpose marine valve used primarily with shipboard cargo tanks and bulkheads. It acts both as a vent valve, to relieve vacuum and pressure, and a check valve, to prevent cargo contamination. It is equipped with an internal flame screen and/or a protective mesh and may include a hinged cover.

NSN 4820-01-285-6146 NSN: 4820-01-285-6146

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Features and Characteristics

Flow Control Device
Ball
Valve Operation Method
Automatic
Flange Shape
Round with holes all ends
Connection Type
Flange all ends
Mounting Position
Vertical
Valve Size
1.250 inches
Maximum Operating Pressure
150.0 pounds per square inch single response
Outside Diameter
4.625 inches all ends
Face To Face Distance
6.750 inches
Bolt Circle Diameter
4.000 inches all ends
Flange Face Design
Plain all ends
Material
Copper flow control device
Media For Which Designed
Air single response
Style Designator
Straight through flanged ends
FSC
4820 Nonpowered Valves
NIIN
012856146
NSN
4820012856146

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
52-90F 1 1/4IN
Cage Code:
09032
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 8481301090
  • NAICS: 332911
  • SITC: 74730
  • Description: Check valves of copper having a pressure rating of 850 kpa or over
  • End Use (Code 21180):
    Industrial machines, other

Q & A

Frequently asked questions for NSN 4820-01-285-6146
What are the manufacturers of nsn 4820012856146?
Does this nsn 4820012856146 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820012856146
A dual purpose marine valve used primarily with shipboard cargo tanks and bulkheads. it acts both as a vent valve, to relieve vacuum and pressure, and a check valve, to prevent cargo contamination. it is equipped with an internal flame screen and/or a protective mesh and may include a hinged cover.
Does nsn 4820012856146 contain any precious metals?
No precious metal content.
Does nsn 4820012856146 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820012856146?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
52995
FIIG:
A530B0
App. Key:
Cond. Code:
1
Status:
A

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