4820-01-256-3582

Find complete technical information, availability, and procurement data for: 4820-01-256-3582
DODParts.com distributes related products varnishes dopes paints, aircraft parts and consumables, electrical parts, fittings and other components for the aerospace and defense industries. Submit the short price quote form for NSN 4820-01-256-3582 to receive an up to date pricing and availability quote by email.

Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-256-3582

Item Name Code

05488

Assigment Date

06/04/1987 (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.

poppet flow control device, 400.0 fahrenheit 2nd response maximum operating temp, -100.0 fahrenheit 1st response maximum operating temp, right-hand all ends thread direction, 3a all ends thread class

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 all ends
Thread Direction: right-hand all ends
Flow Control Device: poppet
Maximum Operating Temp: -100.0 fahrenheit 1st response
Maximum Operating Temp: 400.0 fahrenheit 2nd response
Connection Style: plain (tube) all ends
Valve Operation Method: automatic
Connection Type: threaded external tube all ends
Maximum Operating Pressure: 200.0 pounds per square inch single response
Nominal Thread Size: 0.437 inches all ends
Opening Pressure Setting: 28.0 pounds per square inch
Material: aluminum alloy body
Media For Which Designed: air 1st response
Media For Which Designed: carbon dioxide 2nd response
Media For Which Designed: helium 3rd response
Media For Which Designed: hydrogen 4th response
Media For Which Designed: nitrogen, gaseous 5th response
Style Designator: straight thru
Thread Series Designator: unjf 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
412732	Safety Relief Valve
524A-4D-28	Safety Relief Valve
Z02RV04A280S	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-256-3582?

The FSCG of the NSN 4820-01-256-3582 is 4820

Does the NSN 4820-01-256-3582 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-256-3582 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 4820-01-256-3582 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-256-3582 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 4820-01-256-3582 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Thu, Jun 4, 1987