4820-01-054-6657

Find complete technical information, availability, and procurement data for: 4820-01-054-6657
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-054-6657

Item Name Code

05488

Assigment Date

01/24/1978 (48 years ago)

A valve having two or more ports with valve stem or pilot needle in a normally open or closed position. It is specifically designed to stop or start or change the flow of fluid by means of the magnetic action of an electric coil on a moveable core or plunger. The valve may be equipped with a manual opening or closing device. For items with three or more ports that utilize a reciprocating slide with recess areas which mate with ports in an integral or replaceable ported sleeve, see valve (1), linear, directional control. It may be inline or cartridge (manifold) design. Excludes:valve (1), butterfly.

spring disk loading method, right-hand 1st end thread direction, 400.0 fahrenheit single response maximum operating temp, 3a 1st end thread class, 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 1st end
Thread Direction: right-hand 1st end
Flow Control Device: poppet
Disk Loading Method: spring
Maximum Operating Temp: 400.0 fahrenheit single response
Connection Style: external seat for gasket seal (boss) 1st end
Valve Operation Method: automatic
Connection Type: threaded external boss 1st end
Maximum Operating Pressure: 30.0 pounds per square inch single response
Nominal Thread Size: 0.562 inches 1st end
Seat Angle: 37.0 degrees 1st end
Opening Pressure Setting: 19.0 pounds per square inch
Special Features: 6th media oxygen,gaseous
Material: aluminum alloy 2024 overall
Material Document And Classification: qq-a-250/4,t4 fed spec single material response overall
Media For Which Designed: air 1st response
Media For Which Designed: carbon dioxide 2nd response
Media For Which Designed: helium 3rd response
Media For Which Designed: hydrogen 4th response
Media For Which Designed: nitrogen, gaseous 5th response
Surface Treatment: anodize
Style Designator: straight thru w/baffle
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
D524A6D19	Safety Relief Valve
D524A6D19-0	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-054-6657?

The FSCG of the NSN 4820-01-054-6657 is 4820

Does the NSN 4820-01-054-6657 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-054-6657 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 4820-01-054-6657 contain precious materials?

Precious metal content is unknown

Does NSN 4820-01-054-6657 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 4820-01-054-6657 was assigned to the Federal Catalog?

It was assigned 48 years ago, on Tue, Jan 24, 1978