4820-00-008-8807

Find complete technical information, availability, and procurement data for: 4820-00-008-8807
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-008-8807

Item Name Code

20520

Assigment Date

07/28/1972 (54 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.

spring disk loading method, 0.609 inches nominal aperture diameter, poppet flow control device, 3a all ends thread class, right-hand all ends 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 all ends
Thread Direction: right-hand all ends
Aperture Diameter: 0.609 inches nominal
Flow Control Device: poppet
Disk Loading Method: spring
Maximum Operating Temp: 275.0 fahrenheit single response
Connection Style: flared (tube) all ends
Valve Operation Method: automatic
Connection Type: threaded external tube all ends
Mounting Position: horizontal
Thread Quantity Per Inch: 12 all ends
Maximum Operating Pressure: 3000.0 pounds per square inch single response
Nominal Thread Size: 1.062 inches all ends
Seat Angle: 37.0 degrees all ends
Material: steel comp 303 body
Material: steel comp 303 seat
Material: steel comp 440c flow control device
Media For Which Designed: hydraulic fluid, petroleum base single response
Surface Treatment: passivate
Style Designator: straight thru
Thread Series Designator: unj 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
11177545	Restrictor Check Valve
9R2110	Restrictor Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-008-8807?

The FSCG of the NSN 4820-00-008-8807 is 4820

Does the NSN 4820-00-008-8807 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302090

Does NSN 4820-00-008-8807 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 4820-00-008-8807 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-008-8807 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 4820-00-008-8807 was assigned to the Federal Catalog?

It was assigned 54 years ago, on Fri, Jul 28, 1972