4820-01-231-6640

Find complete technical information, availability, and procurement data for: 4820-01-231-6640
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-231-6640

Item Name Code

05487

Assigment Date

05/01/1986 (40 years ago)

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes:valve (1), relief, pressure and temperature.

unthreaded internal pipe all ends connection type, automatic valve operation method, disk flow control device, 1.500 inches all ends nominal pipe size accommodated, socket (pipe) all ends connection style

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Nominal Pipe Size Accommodated: 1.500 inches all ends
Flow Control Device: disk
Connection Style: socket (pipe) all ends
Valve Operation Method: automatic
Connection Type: unthreaded internal pipe all ends
Mounting Position: horizontal or vertical
Material: steel uns k03504 body
Material Document And Classification: astm a105 assn std single material response body
Style Designator: straight thru

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
HL-61-SW 1-1/2I	Check Valve
HL-61-SW 1-1/2IN	Check Valve
HL-61-THRD 1.50	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-231-6640?

The FSCG of the NSN 4820-01-231-6640 is 4820

Does the NSN 4820-01-231-6640 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302090

Does NSN 4820-01-231-6640 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 4820-01-231-6640 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-231-6640 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 4820-01-231-6640 was assigned to the Federal Catalog?

It was assigned 40 years ago, on Thu, May 1, 1986