4K21-K3-S3-3-8

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-457-1608

Item Name Code

05487

Assigment Date

09/08/1969 (56 years ago)

A manually or power operated valve having three or more ports. The direction of the flow through the various ports is controlled by either one or more reciprocating slide(s) or spool(s) with recess areas which mate with ports in an integral or replaceable ported sleeve, or one or more poppet(s). It is designed to change the direction of fluid flow from one valve port to another. An off (no flow) position is not a flow pattern. The valve is designed to actuate various components of a fluid system. A power operated valve may have a manual override. For items which stop, start, or change the flow of fluid, see: valve, solenoid. Excludes:valve, plug. See also servovalve, hydraulic; body section, working, linear directional control valve; and valve assembly.

ball flow control device, 0.906 inches offset distance, plain, optional end (pipe) all ends connection style, 225.0 fahrenheit single response maximum operating temp, 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 Direction: right-hand all ends
Offset Distance: 0.906 inches
Flow Control Device: ball
Maximum Operating Temp: 225.0 fahrenheit single response
Connection Style: plain, optional end (pipe) all ends
Valve Operation Method: manual
Connection Type: threaded internal pipe all ends
Mounting Position: horizontal or vertical
Maximum Operating Pressure: 3000.0 pounds per square inch single response
Nominal Thread Size: 0.375 inches all ends
Material: aluminum overall
Media For Which Designed: hydraulic fluid, mineral base single response
Thread Series Designator: npt 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
231-5050	Check Valve
4K21-K3-S3-3-8	Check Valve
514-0376	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-457-1608?

The FSCG of the NSN 4820-00-457-1608 is 4820

Does the NSN 4820-00-457-1608 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-00-457-1608 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 4820-00-457-1608 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-457-1608 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 4820-00-457-1608 was assigned to the Federal Catalog?

It was assigned 56 years ago, on Mon, Sep 8, 1969