FBFFE-E2MAM

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-313-4546

Item Name Code

05488

Assigment Date

01/09/1990 (36 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.

300.0 fahrenheit 2nd response maximum operating temp, threaded bonnet attachment method, inside screw bonnet type, right-hand all ends thread direction, ball or disk flow control device

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 all ends
Flow Control Device: ball or disk
Bonnet Type: inside screw
Bonnet Attachment Method: threaded
Maximum Operating Temp: 300.0 fahrenheit 2nd response
Maximum Operating Temp: 406.0 fahrenheit 1st response
Connection Style: plain (pipe) 1st end
Connection Style: plain,optional end(pipe) 2nd end
Valve Operation Method: automatic
Connection Type: threaded external pipe 1st end
Connection Type: threaded internal pipe 2nd end
Maximum Operating Pressure: 250.0 pounds per square inch 1st response
Maximum Operating Pressure: 300.0 pounds per square inch 2nd response
Nominal Thread Size: 1.000 inches 1st end
Nominal Thread Size: 1.250 inches 2nd end
Opening Pressure Setting: 300.0 pounds per square inch
Material: copper alloy body
Media For Which Designed: air 1st response
Media For Which Designed: gas, inert 2nd response
Media For Which Designed: steam 3rd response
Style Designator: angle
Thread Series Designator: npt 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
A-3190	Safety Relief Valve
FBFFE-E2MAM	Safety Relief Valve
FBFFE-E2MAN	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-313-4546?

The FSCG of the NSN 4820-01-313-4546 is 4820

Does the NSN 4820-01-313-4546 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-313-4546 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 4820-01-313-4546 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-313-4546 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 4820-01-313-4546 was assigned to the Federal Catalog?

It was assigned 36 years ago, on Tue, Jan 9, 1990