4820-00-090-6411

Find complete technical information, availability, and procurement data for: 4820-00-090-6411
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-090-6411

Item Name Code

05488

Assigment Date

11/29/1972 (53 years ago)

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes:valve (1), relief, pressure and temperature.

3b 1st end thread class, right-hand 2nd end thread direction, 3a 2nd end thread class, right-hand 1st end thread direction, poppet 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 2nd end
Thread Class: 3b 1st end
Thread Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Flow Control Device: poppet
Disk Loading Method: spring
End Item Identification: an/alq-119
Connection Style: external seat for gasket seal (boss) 2nd end
Connection Style: gasket seal(boss) 1st end
Valve Operation Method: automatic
Connection Type: threaded external boss 2nd end
Connection Type: threaded internal boss 1st end
Features Provided: pressure tight outlet side
Thread Quantity Per Inch: 20 2nd end
Thread Quantity Per Inch: 20 1st end
Nominal Thread Size: 0.437 inches 1st end
Nominal Thread Size: 0.438 inches 2nd end
Opening Pressure Setting: 37.0 pounds per square inch
Surface Treatment: anodize
Surface Treatment Document And Classification: mil-a-8625,ty 1 mil spec single treatment response
Style Designator: straight thru
Thread Series Designator: unf 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
578R946H01	Safety Relief Valve
64A-4DB-35	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-090-6411?

The FSCG of the NSN 4820-00-090-6411 is 4820

Does the NSN 4820-00-090-6411 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-090-6411 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 4820-00-090-6411 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-090-6411 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 4820-00-090-6411 was assigned to the Federal Catalog?

It was assigned 53 years ago, on Wed, Nov 29, 1972