4820-01-421-4639

Find complete technical information, availability, and procurement data for: 4820-01-421-4639
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-421-4639

Item Name Code

05487

Assigment Date

11/08/1995 (30 years ago)

spring disk loading method, plain, optional end (pipe) all ends connection style, poppet flow control device, right-hand all ends thread direction, 170ft patrol coastal (pc-1) class ships end item identification

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
Flow Control Device: poppet
Disk Loading Method: spring
End Item Identification: 170ft patrol coastal (pc-1) class ships
Connection Style: plain, optional end (pipe) all ends
Valve Operation Method: automatic
Connection Type: threaded internal pipe all ends
Mounting Position: horizontal
Maximum Operating Pressure: 3000.0 pounds per square inch single response
Nominal Thread Size: 1.000 inches all ends
Opening Pressure Setting: 5.0 pounds per square inch
Special Features: subplate mounted
Material: steel body
Thread Series Designator: nptf all ends

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-01-283-3925	No Name Available	10/01/2012

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
CS1600-S-V	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-421-4639?

The FSCG of the NSN 4820-01-421-4639 is 4820

Does the NSN 4820-01-421-4639 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302090

Does NSN 4820-01-421-4639 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 4820-01-421-4639 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-421-4639 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 4820-01-421-4639 was assigned to the Federal Catalog?

It was assigned 30 years ago, on Wed, Nov 8, 1995