4820-00-283-9071

Find complete technical information, availability, and procurement data for: 4820-00-283-9071
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-283-9071

Item Name Code

20520

Assigment Date

09/05/1973 (52 years ago)

3a 1st end thread class, 0.802 inches nominal aperture diameter, 3a 2nd end thread class, right-hand 1st end thread direction, 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.

Thread Class: 3a 1st end
Thread Class: 3a 2nd end
Thread Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Aperture Diameter: 0.802 inches nominal
Flow Control Device: poppet
Disk Loading Method: spring
Maximum Operating Temp: 275.0 fahrenheit single response
Connection Style: flareless 1st end
Connection Style: flareless 2nd end
Valve Operation Method: automatic
Connection Type: threaded external tube 2nd end
Connection Type: threaded external tube 1st end
Mounting Position: horizontal
Maximum Operating Pressure: 3000.0 pounds per square inch single response
Nominal Thread Size: 0.438 inches 2nd end
Nominal Thread Size: 0.562 inches 1st end
Seat Angle: 12.0 degrees 1st end
Seat Angle: 12.0 degrees 2nd end
Material: aluminum alloy 2024 body
Material: aluminum alloy 2024 seat
Material: steel comp 303 flow control device
Material Document And Classification: 66, aisi 303/sae 30303 fed std single material response flow control device
Material Document And Classification: qq-a-225/6 fed spec single material response body
Material Document And Classification: qq-a-225/6 fed spec single material response seat
Media For Which Designed: hydraulic fluid, petroleum base single response
Surface Treatment: anodize
Surface Treatment Document And Classification: mil-a-8625 mil spec all treatment responses
Style Designator: straight thru
Thread Series Designator: unjf 2nd end
Thread Series Designator: unjf 1st end

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
R4002-3	Restrictor Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-283-9071?

The FSCG of the NSN 4820-00-283-9071 is 4820

Does the NSN 4820-00-283-9071 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-00-283-9071 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 4820-00-283-9071 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-283-9071 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 4820-00-283-9071 was assigned to the Federal Catalog?

It was assigned 52 years ago, on Wed, Sep 5, 1973