4820-00-251-8561

Find complete technical information, availability, and procurement data for: 4820-00-251-8561
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-251-8561

Item Name Code

05488

Assigment Date

07/23/1969 (57 years ago)

right-hand 1st end thread direction, disk flow control device, plain,optional end(pipe) 1st end connection style, spring disk loading method, automatic valve operation method

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 1st end
Flow Control Device: disk
Disk Loading Method: spring
Connection Style: plain,optional end(pipe) 1st end
Valve Operation Method: automatic
Connection Type: threaded internal pipe 1st end
Nominal Thread Size: 0.500 inches 1st end
Special Features: 0.750-14 npt external mtg thd
Material: copper alloy body
Material: copper alloy seat
Material: plastic flow control device
Style Designator: straight thru
Thread Series Designator: npt 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
3H36393T20	Safety Relief Valve
3W75305T60	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-251-8561?

The FSCG of the NSN 4820-00-251-8561 is 4820

Does the NSN 4820-00-251-8561 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-251-8561 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 4820-00-251-8561 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-251-8561 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 4820-00-251-8561 was assigned to the Federal Catalog?

It was assigned 57 years ago, on Wed, Jul 23, 1969