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Vent-check Valve NSN 4820-01-134-7751

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 4820-01-134-7751 NSN: 4820-01-134-7751

Features and Characteristics

Pipe Size Accommodated
1.500 inches 1st end
Flow Control Device
Ball
Connection Style
Socket (pipe) 1st end
Valve Operation Method
Automatic
Connection Type
Unthreaded internal pipe 1st end
Mounting Position
Vertical
Special Features
With flame screen
Material
Steel body
Style Designator
Straight thru
FSC
4820 Nonpowered Valves
NIIN
011347751
NSN
4820011347751

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
52-20S-1.500IN
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: 8481302090
  • NAICS: 332911
  • SITC: 74730
  • Description: Check valves of steel
  • End Use (Code 21180):
    Industrial machines, other

Q & A

Frequently asked questions for NSN 4820-01-134-7751
What are the manufacturers of nsn 4820011347751?
Does this nsn 4820011347751 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820011347751
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 4820011347751 contain any precious metals?
No precious metal content.
Does nsn 4820011347751 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820011347751?
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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  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
  •   Quality Fast Service
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