4820-01-081-7429

Find complete technical information, availability, and procurement data for: 4820-01-081-7429
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-081-7429

Item Name Code

05488

Assigment Date

08/18/1979 (47 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.

integral bonnet attachment method, disk flow control device, right-hand 1st end thread direction, spring disk loading method, inside spring bonnet type

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
Bonnet Type: inside spring
Bonnet Attachment Method: integral
Disk Loading Method: spring
Maximum Operating Temp: 200.0 fahrenheit single response
Connection Style: plain (pipe) 1st end
Valve Operation Method: automatic
Connection Type: threaded external pipe 1st end
Adjustable Pressure Range: +5.0 to 25.0 pounds per square inch
Maximum Operating Pressure: 300.0 pounds per square inch single response
Nominal Thread Size: 0.125 inches 1st end
Material: copper alloy overall
Media For Which Designed: air single response
Style Designator: straight thru
Thread Series Designator: nptf 1st end

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-01-428-6385	No Name Available	03/01/2001

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
10257-1105-01	Safety Relief Valve
1257-1105-01	Safety Relief Valve
16-004-030	Safety Relief Valve
M58500-001	Safety Relief Valve
Z40-0004-0005	Safety Relief Valve
Z40-0004-005	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-081-7429?

The FSCG of the NSN 4820-01-081-7429 is 4820

Does the NSN 4820-01-081-7429 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-081-7429 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 4820-01-081-7429 contain precious materials?

Precious metal content is unknown

Does NSN 4820-01-081-7429 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 4820-01-081-7429 was assigned to the Federal Catalog?

It was assigned 47 years ago, on Sat, Aug 18, 1979