4820-00-855-8372

Find complete technical information, availability, and procurement data for: 4820-00-855-8372
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-855-8372

Item Name Code

05488

Assigment Date

01/01/1962 (64 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.

disk flow control device, right-hand all ends thread direction, 2b all ends thread class, spring disk loading method, gasket seal(boss) 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.

Thread Class: 2b all ends
Thread Direction: right-hand all ends
Flow Control Device: disk
Disk Loading Method: spring
Connection Style: gasket seal(boss) all ends
Valve Operation Method: automatic
Connection Type: threaded internal boss all ends
Thread Quantity Per Inch: 12 all ends
Nominal Thread Size: 1.312 inches all ends
Opening Pressure Setting: 3300.0 pounds per square inch
Material: steel body
Media For Which Designed: hydraulic fluid, petroleum base 1st response
Media For Which Designed: oil, hydraulic 2nd response
Style Designator: straight thru note: to be used for valve bodies of one section only.
Thread Series Designator: un 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
1504-3300	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-855-8372?

The FSCG of the NSN 4820-00-855-8372 is 4820

Does the NSN 4820-00-855-8372 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-855-8372 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 4820-00-855-8372 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-855-8372 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 4820-00-855-8372 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962