Types of PVC pipe fittings: There are many types, including:Elbows: Change the direction of the pipe (90-degree, 45-degree, etc.).Couplings: Connect two straight pipe sections.Tees: Create a three-way branch in the pipe run.Reducers: Connect pipes of different diameters.Caps: Seal the end of a pipe run.Unions: Allow for easy connection/disconnection for maintenance.