4820-00-421-5869

Find complete technical information, availability, and procurement data for: 4820-00-421-5869
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-421-5869

Item Name Code

05488

Assigment Date

02/09/1972 (54 years ago)

A relay consisting of an energizing coil and a metallic reed switch mechanism. The reeds serve as both core and contacts, which are not hinged or pivoted and which move by flexure when acted upon by a magnetic field induced by energization of the coil. It may also include a biasing magnet. The biasing magnet, either aids or opposes the movement of the reeds and the opening or closing of the contacts. For items in which actuation is dependent on the resonant frequency of the reeds see relay, resonant reed. Excludes:relay, electromagnetic.

diaphragm flow control device, packing retaining bonnet type, spring disk loading method, 3a 1st end thread class, right-hand 1st 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 Direction: right-hand 1st end
Flow Control Device: diaphragm
Bonnet Type: packing retaining
Disk Loading Method: spring
Valve Discharge Flow Rate: 15.0 cubic feet per minute
Maximum Operating Temp: 330.0 fahrenheit single response
Connection Style: external seat for gasket seal (boss) 1st end
Valve Operation Method: automatic
Connection Type: threaded external boss 1st end
Thread Quantity Per Inch: 20 1st end
Nominal Thread Size: 0.437 inches 1st end
Opening Pressure Setting: 4500.0 pounds per square inch
Nominal Outside Diameter Tube Accommodated: 0.250 inches 1st end
Material: copper alloy 170 flow control device
Material: steel comp 630 body
Material: steel comp 630 seat
Media For Which Designed: air 1st response
Media For Which Designed: nitrogen, gaseous 2nd response
Surface Treatment: paint and primer
Style Designator: angle
Thread Series Designator: unf 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
34670-3	Safety Relief Valve
A51H9032-1	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-421-5869?

The FSCG of the NSN 4820-00-421-5869 is 4820

Does the NSN 4820-00-421-5869 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-421-5869 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 4820-00-421-5869 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-421-5869 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 4820-00-421-5869 was assigned to the Federal Catalog?

It was assigned 54 years ago, on Wed, Feb 9, 1972