4820-01-281-5166

Find complete technical information, availability, and procurement data for: 4820-01-281-5166
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-281-5166

Item Name Code

05488

Assigment Date

06/25/1988 (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.

threaded bonnet attachment method, socket with brazing ring (tube) all ends connection style, 180.0 fahrenheit single response maximum operating temp, disk flow control device, inside screw bonnet type

Product Characteristics

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

Flow Control Device: disk
Bonnet Type: inside screw
Bonnet Attachment Method: threaded
Maximum Operating Temp: 180.0 fahrenheit single response
Connection Style: socket with brazing ring (tube) all ends
Valve Operation Method: automatic
Connection Type: unthreaded internal tube all ends
Adjustable Pressure Range: +45.0 to 70.0 pounds per square inch
Maximum Operating Pressure: 400.0 pounds per square inch single response
Nominal Outside Diameter Tube Accommodated: 0.500 inches all ends
Material: copper alloy body
Material: nickel alloy seat
Material: rubber butadiene-acrylonitrile class nbr flow control device
Media For Which Designed: gas, inert single response
Style Designator: angle

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-01-282-6915	No Name Available	06/01/2001

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
1385-1/2-PL4149-4126 45T70PSI	Safety Relief Valve
YB2385C225	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-281-5166?

The FSCG of the NSN 4820-01-281-5166 is 4820

Does the NSN 4820-01-281-5166 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-281-5166 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 4820-01-281-5166 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-281-5166 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 4820-01-281-5166 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Sat, Jun 25, 1988