642-538-1180-00-0

View detailed technical data, stock status, and sourcing information for: 642-538-1180-00-0
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-228-9084

Item Name Code

05487

Assigment Date

03/22/1986 (40 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.

plain (pipe) 1st end connection style, 2b 1st end thread class, ball flow control device, right-hand 1st end thread direction, automatic valve operation method

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 1st end
Thread Direction: right-hand 1st end
Flow Control Device: ball
Connection Style: plain (pipe) 1st end
Valve Operation Method: automatic
Connection Type: threaded external pipe 1st end
Connection Type: threaded internal tube 2nd end
Maximum Operating Pressure: 50.0 pounds per square inch single response
Nominal Thread Size: 0.250 inches 1st end
Seat Angle: 12.0 degrees 1st end
Nominal Outside Diameter Tube Accommodated: 0.375 inches 2nd end
Style Designator: angle
Thread Series Designator: npt 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
538-1180-00-0	Check Valve
642-538-1180-00-0	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-228-9084?

The FSCG of the NSN 4820-01-228-9084 is 4820

Does the NSN 4820-01-228-9084 have a Schedule B code assigned?

Yes, the Schedule B code is 8481301010

Does NSN 4820-01-228-9084 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 4820-01-228-9084 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-228-9084 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 4820-01-228-9084 was assigned to the Federal Catalog?

It was assigned 40 years ago, on Sat, Mar 22, 1986