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Restrictor Check Valve NSN 4820-01-008-6639

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 4820-01-008-6639 NSN: 4820-01-008-6639

Features and Characteristics

Thread Class
3a all ends
Thread Direction
Right-hand all ends
Flow Control Device
Poppet
Disk Loading Method
Spring
Maximum Operating Temp
450.0 degrees fahrenheit single response
Connection Style
Flareless all ends
Valve Operation Method
Automatic
Connection Type
Threaded external tube all ends
Mounting Position
Horizontal
Maximum Operating Pressure
300.0 pounds per square inch single response
Thread Size
0.500 inches all ends
Seat Angle
12.0 degrees all ends
Material
Steel comp 303
Material Specification
Mil-s-7720 military specification single material response
Media For Which Designed
Air single response
Surface Treatment
Passivate
Surface Treatment Specification
Mil-s-5002 military specification single treatment response
Style Designator
Straight thru
Thread Series Designator
Unjf all ends
FSC
4820 Nonpowered Valves
NIIN
010086639
NSN
4820010086639

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
9R2038
Cage Code:
99240
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 4820-01-008-6639
What are the manufacturers of nsn 4820010086639?
Does this nsn 4820010086639 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820010086639
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 4820010086639 contain any precious metals?
Precious metal content is unknown.
Does nsn 4820010086639 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820010086639?
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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  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
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