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4820-00-229-8621

Find complete technical information, availability, and procurement data for: 4820-00-229-8621

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4820-00-229-8621
Federal Supply Group
Valves
Federal Supply Classification
4820 Nonpowered Valves
National Stock Number
4820-00-229-8621
Item Name Code
20520
Assigment Date
05/28/1973 (53 years ago)

A motor which is designed for operation from a direct current source. Excludes:motor, engine starter, electrical. See also motor, control.

right-hand 1st end thread direction, 0.187 inches minimum and 0.192 inches maximum aperture diameter, 3a 1st end thread class, 0.250 inches 2nd end nominal pipe size accommodated, right-hand 2nd end thread direction

Product Characteristics

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

Nominal Pipe Size Accommodated
0.250 inches 2nd end
Thread Class
3a 1st end
Thread Direction
right-hand 1st end
Thread Direction
right-hand 2nd end
Aperture Diameter
0.187 inches minimum and 0.192 inches maximum
Flow Control Device
poppet
Disk Loading Method
spring
Maximum Operating Temp
250.0 fahrenheit single response
Connection Style
plain (pipe) 2nd end
Valve Operation Method
automatic
Connection Type
threaded external pipe 2nd end
Connection Type
threaded external tube 1st end
Mounting Position
horizontal or vertical
Thread Quantity Per Inch
18 1st end
Thread Quantity Per Inch
18 2nd end
Maximum Operating Pressure
7500.0 pounds per square inch single response
Nominal Thread Size
0.250 inches 2nd end
Nominal Thread Size
0.562 inches 1st end
Seat Angle
37.0 degrees 1st end
Nominal Outside Diameter Tube Accommodated
0.375 inches 1st end
Material
rubber butadiene-acrylonitrile class nbr packing
Material
steel body
Material
steel corrosion resisting flow control device
Material
steel seat
Media For Which Designed
hydraulic fluid, petroleum base single response
Style Designator
straight thru
Thread Series Designator
npt 2nd end
Thread Series Designator
unf 1st end
Reference Number Differentiating Characteristics
as differentiated by the source control dwg no.

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number Name
535-6S3-1-5 Restrictor Check Valve
67A247D103 Restrictor Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-229-8621?
The FSCG of the NSN 4820-00-229-8621 is 4820
Does the NSN 4820-00-229-8621 have a Schedule B code assigned?
Yes, the Schedule B code is 8481302090
Does NSN 4820-00-229-8621 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 4820-00-229-8621 contain precious materials?
Item does not contain precious metal.
Does NSN 4820-00-229-8621 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 4820-00-229-8621 was assigned to the Federal Catalog?
It was assigned 53 years ago, on Mon, May 28, 1973

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