Follow CIVIL Tech Time Types of PVC fittings shown in your chart, organized for easy study and sharing: Key PVC Fittings & Their Uses - 90° Elbow – Changes pipe direction at a right angle. - 45° Elbow – Provides smoother directional change. - Tee – Splits or combines flow into three directions. - Coupling – Connects two straight pipes. - Reducer – Connects pipes of different diameters. - Bushing – Inserts into a fitting to reduce diameter. - Plug – Seals off the end of a pipe. - Adapter (Male/Fe