In which situation would you use a wye fitting?

A wye fitting is specifically designed to create a branch in a piping system at an angle. This allows for a smooth transition from the main line to the branch line, which minimizes turbulence and potential blockages in the flow of water or sewage. Using a wye fitting is particularly beneficial in plumbing systems because it helps maintain the correct flow dynamics when connecting additional fixtures or branches.

In situations where a fixture needs to be connected directly to a main pipe, a different fitting such as a tee would typically be used, as it allows for perpendicular connections. For repairing a damaged pipe, couplings or other repair fittings would be more appropriate, as they focus on reestablishing continuity in the line without branching off. When installing a straight pipe run, it is important to ensure that the fittings used are suitable for maintaining the straight trajectory without angles, thus avoiding the need for a wye fitting.