4820-00-627-4778

Find complete technical information, availability, and procurement data for: 4820-00-627-4778
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-627-4778

Item Name Code

20520

Assigment Date

01/01/1961 (65 years ago)

flared (tube) 1st end connection style, spring disk loading method, 3a 1st end thread class, right-hand 1st end thread direction, disk flow control device

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
Flow Control Device: disk
Disk Loading Method: spring
Connection Style: flared (tube) 1st end
Valve Operation Method: automatic
Connection Type: threaded external tube 1st end
Mounting Position: horizontal
Thread Quantity Per Inch: 12 1st end
Maximum Operating Pressure: 265.0 pounds per square inch single response
Nominal Thread Size: 1.875 inches 1st end
Seat Angle: 37.0 degrees 1st end
Nominal Outside Diameter Tube Accommodated: 1.500 inches 1st end
Material: aluminum alloy 2017 body
Material: rubber synthetic packing
Media For Which Designed: fuel/oil, hydrocarbon single response
Surface Treatment: anodize
Style Designator: straight thru
Thread Series Designator: un 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
1111-587008	Restrictor Check Valve
24C131-3	Restrictor Check Valve
695656-3	Restrictor Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-627-4778?

The FSCG of the NSN 4820-00-627-4778 is 4820

Does the NSN 4820-00-627-4778 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-00-627-4778 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 4820-00-627-4778 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-627-4778 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 4820-00-627-4778 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961