22M A-2X3-4 250

View detailed technical data, stock status, and sourcing information for: 22M A-2X3-4 250
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-137-1805

Item Name Code

05488

Assigment Date

07/28/1971 (55 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.

0.750 inches 1st end nominal pipe size accommodated, right-hand 1st end thread direction, 0.500 inches 2nd end nominal pipe size accommodated, disk flow control device, right-hand 2nd 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: 0.500 inches 2nd end
Nominal Pipe Size Accommodated: 0.750 inches 1st end
Thread Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Flow Control Device: disk
Disk Loading Method: spring
Valve Discharge Flow Rate: 252.0 cubic feet per minute
Maximum Operating Temp: 150.0 fahrenheit single response
Connection Style: plain (pipe) 2nd end
Connection Style: plain,optional end(pipe) 1st end
Valve Operation Method: automatic
Connection Type: threaded external pipe 2nd end
Connection Type: threaded internal pipe 1st end
Features Provided: valve stem lock shield
Maximum Operating Pressure: 1000.0 pounds per square inch single response
Nominal Thread Size: 0.500 inches 2nd end
Nominal Thread Size: 0.750 inches 1st end
Opening Pressure Setting: 250.0 pounds per square inch
Material: copper alloy overall
Media For Which Designed: air single response
Style Designator: angle
Thread Series Designator: npt 2nd end
Thread Series Designator: npt 1st end

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-00-251-0821	No Name Available	11/01/2007

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
1-2IN23A275PSIG	Safety Relief Valve
1/2FIG23MA275PSIG	Safety Relief Valve
22 1-2X3-4 250	Safety Relief Valve
22M A-2X3-4 250	Safety Relief Valve
913BDCM01 1/2X3/4 250	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-137-1805?

The FSCG of the NSN 4820-00-137-1805 is 4820

Does the NSN 4820-00-137-1805 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-137-1805 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 4820-00-137-1805 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-137-1805 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 4820-00-137-1805 was assigned to the Federal Catalog?

It was assigned 55 years ago, on Wed, Jul 28, 1971