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4820-00-346-4217

Find complete technical information, availability, and procurement data for: 4820-00-346-4217

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4820-00-346-4217
Federal Supply Group
Valves
Federal Supply Classification
4820 Nonpowered Valves
National Stock Number
4820-00-346-4217
Item Name Code
20520
Assigment Date
01/01/1963 (63 years ago)

A circular item, usually having a flat or grooved flange, boss(es), and/or counterbore, designed to accommodate the end of the spring. It is used to position the spring but does not encase the spring or restrain lateral motion. It may be used in conjunction with a retainer,helical compression spring. Excludes:washer (as modified), seat,ball socket, and holder,spring. See also rotor,engine poppet valve.

poppet flow control device, right-hand 1st end thread direction, 0.113 inches nominal aperture diameter, 3a 1st end thread class, flared (tube) 1st end connection style

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class
3a 1st end
Thread Direction
right-hand 1st end
Aperture Diameter
0.113 inches nominal
Flow Control Device
poppet
Connection Style
flared (tube) 1st end
Connection Type
threaded external tube 1st end
Mounting Position
horizontal
Thread Quantity Per Inch
20 1st end
Maximum Operating Pressure
3000.0 pounds per square inch single response
Nominal Thread Size
0.437 inches 1st end
Seat Angle
37.0 degrees 1st end
Nominal Outside Diameter Tube Accommodated
0.250 inches 1st end
Special Features
2.250 in. lg over-all,0.688 in. across flats
Material
rubber synthetic packing
Material
steel corrosion resisting flow control device
Media For Which Designed
air single response
Style Designator
straight thru
Thread Series Designator
unf 1st end

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Part Number Name
8R7641-9 Restrictor Check Valve

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 4820-00-346-4217?
The FSCG of the NSN 4820-00-346-4217 is 4820
Does NSN 4820-00-346-4217 require demilitarization?
Usml items - mutilation to the point of scrap required worldwide. (note 7).
Does NSN 4820-00-346-4217 contain precious materials?
Precious metal content is unknown
Does NSN 4820-00-346-4217 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 4820-00-346-4217 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Tue, Jan 1, 1963

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