Flare pipe fittings design

The flared tube fitting sleeve insures tube alignment with the fitting body axis and minimizes mechanical strain on the tube.
Flare pipe fittings design allows for repeated disassembly and re-assembly with no need to replace any components. A wide range of configurations are available such as straight connectors, elbows, union, tees, and crosses as well as unique special adapters. Standard flare fitting materials include brass, carbon steel, and stainless steel.
Defined by MIL-F-18866 and SAE J514 standards, these flare fittings have been machined to have a 37° flare seating surface. These fittings are most commonly used in fluid power and fuel delivery applications, especially those using high pressure. These JIC fittings are identical, in a dimensional design, to Aeronautical-Navy fittings, but they have been manufactured to be cost effective and to tolerances that are not as high or specific.
In the fluid power industry, these fittings are used in a test-point and diagnostic setting. There are instances with a three-way coupling can offer a port inline of circuit that allows the user to connect diagnostic equipment or measuring device so pressure readings and system diagnostics can be performed.