4820-00-304-6705

Find complete technical information, availability, and procurement data for: 4820-00-304-6705
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-304-6705

Item Name Code

05488

Assigment Date

10/17/1973 (52 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.

140.0 fahrenheit single response maximum operating temp, poppet flow control device, spring disk loading method, 0.250 inches 1st end nominal pipe size accommodated, right-hand 1st end thread direction

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: 0.250 inches 1st end
Thread Direction: right-hand 1st end
Flow Control Device: poppet
Disk Loading Method: spring
Maximum Operating Temp: 140.0 fahrenheit single response
Connection Style: plain (pipe) 1st end
Valve Operation Method: automatic
Connection Type: threaded external pipe 1st end
Thread Quantity Per Inch: 18 1st end
Maximum Operating Pressure: 1800.0 pounds per square inch single response
Nominal Thread Size: 0.250 inches 1st end
Opening Pressure Setting: 1800.0 pounds per square inch
Special Features: end color coded red to indicate pressure
Material: aluminum alloy seat
Material: aluminum alloy body
Media For Which Designed: fuel/oil, hydrocarbon single response
Surface Treatment: anodize
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
422210-1	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-304-6705?

The FSCG of the NSN 4820-00-304-6705 is 4820

Does the NSN 4820-00-304-6705 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-304-6705 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 4820-00-304-6705 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-304-6705 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 4820-00-304-6705 was assigned to the Federal Catalog?

It was assigned 52 years ago, on Wed, Oct 17, 1973