4820-01-252-9239

Find complete technical information, availability, and procurement data for: 4820-01-252-9239
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-252-9239

Item Name Code

05487

Assigment Date

04/10/1987 (39 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.

3a 1st end thread class, poppet flow control device, right-hand all ends thread direction, 250.0 fahrenheit single response maximum operating temp, external seat for gasket seal (boss) 1st end 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: 3a 1st end
Thread Direction: right-hand all ends
Flow Control Device: poppet
Maximum Operating Temp: 250.0 fahrenheit single response
Connection Style: external seat for gasket seal (boss) 1st end
Connection Style: plain (pipe) 2nd end
Valve Operation Method: automatic
Connection Type: threaded external boss 1st end
Connection Type: threaded external pipe 2nd end
Mounting Position: vertical
Thread Quantity Per Inch: 12 1st end
Maximum Operating Pressure: 3000.0 pounds per square inch single response
Nominal Thread Size: 1.000 inches 2nd end
Nominal Thread Size: 1.313 inches 1st end
Seat Angle: 37.0 degrees 1st end
Material: aluminum alloy body
Media For Which Designed: hydraulic fluid, mineral base single response
Style Designator: straight thru
Thread Series Designator: npt 2nd end
Thread Series Designator: un 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
11624	Check Valve
535-16D251	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-252-9239?

The FSCG of the NSN 4820-01-252-9239 is 4820

Does the NSN 4820-01-252-9239 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-01-252-9239 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 4820-01-252-9239 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-252-9239 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 4820-01-252-9239 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Fri, Apr 10, 1987