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Vent-check Valve NSN 4820-01-252-6074

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 4820-01-252-6074 NSN: 4820-01-252-6074

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Features and Characteristics

Thread Direction
Right-hand 1st end
Flow Control Device
Ball
Connection Style
Plain, optional end (pipe) 1st end
Valve Operation Method
Automatic
Connection Type
Threaded internal pipe 1st end
Mounting Position
Vertical
Thread Size
2.000 inches 1st end
Special Features
Includes cover
Material
Iron cast body
Surface Treatment
Zinc
Style Designator
Straight thru
Thread Series Designator
Npt 1st end
FSC
4820 Nonpowered Valves
NIIN
012526074
NSN
4820012526074

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
52-25T 2IN.CAST
Cage Code:
09032
Status:
A
MSDS:
Part Number:
52-25T 2IN.CAST IRON GALV
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: 8481302010
  • NAICS: 332911
  • SITC: 74730
  • Description: Check valves of iron
  • End Use (Code 21180):
    Industrial machines, other

Q & A

Frequently asked questions for NSN 4820-01-252-6074
What are the manufacturers of nsn 4820012526074?
Does this nsn 4820012526074 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820012526074
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 4820012526074 contain any precious metals?
No precious metal content.
Does nsn 4820012526074 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820012526074?
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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