5177T-6TB-280

View detailed technical data, stock status, and sourcing information for: 5177T-6TB-280
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-338-2022

Item Name Code

05488

Assigment Date

04/28/1991 (35 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.

weight disk loading method, 3b 2nd end thread class, 3a 1st end thread class, poppet flow control device, right-hand all ends thread direction

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 1st end
Thread Class: 3b 2nd end
Thread Direction: right-hand all ends
Flow Control Device: poppet
Disk Loading Method: weight
Maximum Operating Temp: -65.0 fahrenheit 1st response
Maximum Operating Temp: 275.0 fahrenheit 2nd response
Connection Style: flared (tube) 1st end
Connection Style: gasket seal(boss) 2nd end
Valve Operation Method: automatic
Connection Type: threaded external tube 1st end
Connection Type: threaded internal boss 2nd end
Maximum Operating Pressure: 2500.0 pounds per square inch single response
Nominal Thread Size: 0.562 inches all ends
Seat Angle: 37.0 degrees 1st end
Opening Pressure Setting: 280.0 pounds per square inch
Nominal Outside Diameter Tube Accommodated: 0.375 inches 2nd end
Material: rubber butadiene-acrylonitrile class nbr seat
Material: steel comp 303 body
Material Document And Classification: mil-p-25732 mil spec single material response seat
Media For Which Designed: air 1st response
Media For Which Designed: alcohol, ethyl 2nd response
Media For Which Designed: ammonia, liquid 4th response
Media For Which Designed: ammonia, gaseous 3rd response
Media For Which Designed: refrigerant 12 5th response
Style Designator: straight thru note: to be used for valve bodies of separable sections.
Thread Series Designator: unf 2nd end
Thread Series Designator: unjf 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
5177T-6TB-280	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-338-2022?

The FSCG of the NSN 4820-01-338-2022 is 4820

Does the NSN 4820-01-338-2022 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-338-2022 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 4820-01-338-2022 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-338-2022 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 4820-01-338-2022 was assigned to the Federal Catalog?

It was assigned 35 years ago, on Sun, Apr 28, 1991