4820-00-824-1266

Find complete technical information, availability, and procurement data for: 4820-00-824-1266
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-824-1266

Item Name Code

20520

Assigment Date

08/16/1967 (59 years ago)

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.

poppet flow control device, right-hand all ends thread direction, 0.011 inches nominal aperture diameter, spring disk loading method, 3a all ends thread class

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 all ends
Thread Direction: right-hand all ends
Aperture Diameter: 0.011 inches nominal
Flow Control Device: poppet
Disk Loading Method: spring
Maximum Operating Temp: 275.0 fahrenheit single response
Connection Style: flareless all ends
Valve Operation Method: automatic
Connection Type: threaded external tube all ends
Mounting Position: horizontal or vertical
Maximum Operating Pressure: 3000.0 pounds per square inch single response
Nominal Thread Size: 0.437 inches all ends
Seat Angle: 12.0 degrees all ends
Nominal Outside Diameter Tube Accommodated: 0.250 inches all ends
Material: aluminum alloy body
Material: rubber synthetic packing
Material: steel flow control device
Material Document And Classification: fed-std-66, aisi 302/sae 30302 fed std 1st material response and fed-std-66, aisi 303/sae 30303 fed std 2nd material response and fed-std-66, aisi 304/sae 30304 fed std 3rd material response flow control device
Material Document And Classification: qq-a-225/6, alloy 2024 fed spec single material response body
Media For Which Designed: hydraulic fluid, phosphate-ester base single response
Surface Treatment: anodize
Surface Treatment Document And Classification: mil-a-8625,ty 2 mil spec single treatment response
Style Designator: straight thru
Thread Series Designator: unf all ends

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
1R0448-11	Restrictor Check Valve
215-32320-11	Restrictor Check Valve
4R110-11	Restrictor Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-824-1266?

The FSCG of the NSN 4820-00-824-1266 is 4820

Does the NSN 4820-00-824-1266 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-00-824-1266 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 4820-00-824-1266 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-824-1266 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 4820-00-824-1266 was assigned to the Federal Catalog?

It was assigned 59 years ago, on Wed, Aug 16, 1967