4820-01-135-2456

Find complete technical information, availability, and procurement data for: 4820-01-135-2456
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-135-2456

Item Name Code

05488

Assigment Date

07/20/1982 (44 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.

automatic valve operation method, inverted flare (pipe) 1st end connection style, poppet flow control device, right-hand 1st end thread direction, 150.0 pounds per hour valve discharge flow rate

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: poppet
Valve Discharge Flow Rate: 150.0 pounds per hour
Connection Style: inverted flare (pipe) 1st end
Valve Operation Method: automatic
Connection Type: threaded external pipe 1st end
Adjustable Pressure Range: +0.0 to 150.0 pounds per square inch
Nominal Thread Size: 0.250 inches 1st end
Opening Pressure Setting: 0.5 pounds per square inch
Special Features: max operating pressure and temp,200 lb psi,280 deg f; designed for air,alcohol,ammonia,hydrocarbon fuel/oil,helium,inert gas,and gaseous nitrogen
Material: aluminum alloy 2024 overall
Material Document And Classification: qq-a-225/6,t4 fed spec single material response overall
Style Designator: straight thru

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
10145354	Safety Relief Valve
D559A12D150	Safety Relief Valve
LT1038-09	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-135-2456?

The FSCG of the NSN 4820-01-135-2456 is 4820

Does the NSN 4820-01-135-2456 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-135-2456 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 4820-01-135-2456 contain precious materials?

Precious metal content is unknown

Does NSN 4820-01-135-2456 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 4820-01-135-2456 was assigned to the Federal Catalog?

It was assigned 44 years ago, on Tue, Jul 20, 1982