4820-01-277-4898

Find complete technical information, availability, and procurement data for: 4820-01-277-4898
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-277-4898

Item Name Code

05487

Assigment Date

04/22/1988 (38 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.

2b all ends thread class, 180.0 fahrenheit single response maximum operating temp, disk flow control device, right-hand all ends thread direction, threaded internal tube all ends connection type

Product Characteristics

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

Thread Class: 2b all ends
Thread Direction: right-hand all ends
Flow Control Device: disk
Maximum Operating Temp: 180.0 fahrenheit single response
Connection Type: threaded internal tube all ends
Maximum Operating Pressure: 265.0 pounds per square inch single response
Nominal Thread Size: 0.438 inches all ends
Nominal Outside Diameter Tube Accommodated: 0.250 inches all ends
Material: copper alloy body
Material: rubber synthetic flow control device
Material: steel comp 303 stem
Media For Which Designed: water, fresh single response
Style Designator: angle
Thread Series Designator: unf 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
5497484-1	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-277-4898?

The FSCG of the NSN 4820-01-277-4898 is 4820

Does the NSN 4820-01-277-4898 have a Schedule B code assigned?

Yes, the Schedule B code is 8481301090

Does NSN 4820-01-277-4898 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 4820-01-277-4898 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-277-4898 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 4820-01-277-4898 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Fri, Apr 22, 1988