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Restrictor Check Valve NSN 4820-01-312-1839

Item Description

A valve having an orifice in the poppet, disk, or the like, to permit restricted fluid flow when the valve is seated. It does not have a stem or provisions for pressure adjustments, and is similar to a valve, check with the exception of the orifice which permits fluid flow in more than one direction.

NSN 4820-01-312-1839 NSN: 4820-01-312-1839

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Features and Characteristics

Thread Class
2a all ends
Thread Direction
Right-hand all ends
Connection Style
Plain (tube) 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded external tube all ends
Maximum Operating Pressure
3000.0 pounds per square inch single response
Thread Size
0.438 inches all ends
Seat Angle
37.5 degrees 1st end
Material
Steel comp 303 seat
Style Designator
Cross
Thread Series Designator
Unf all ends
Furnished Items And Quantity
2 nut
FSC
4820 Nonpowered Valves
NIIN
013121839
NSN
4820013121839

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
FCLX0504450B
Cage Code:
92555
Status:
A
MSDS:
Part Number:
6300514
Cage Code:
53711
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 4820-01-312-1839
What are the manufacturers of nsn 4820013121839?
Does this nsn 4820013121839 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820013121839
A valve having an orifice in the poppet, disk, or the like, to permit restricted fluid flow when the valve is seated. it does not have a stem or provisions for pressure adjustments, and is similar to a valve, check with the exception of the orifice which permits fluid flow in more than one direction.
Does nsn 4820013121839 contain any precious metals?
No precious metal content.
Does nsn 4820013121839 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820013121839?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
20520
FIIG:
A530B0
App. Key:
Cond. Code:
1
Status:
A

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