PVC SWR Couplers are fittings used in Soil, Waste, and Rainwater (SWR) drainage systems. These are essential for the effective management of soil and waste from buildings, as well as rainwater drainage. The couplers are designed to join two pipes of the same diameter, allowing for a straight, continuous run in the plumbing system. They have a smooth interior surface, which helps maintain efficient flow and prevents the accumulation of debris or waste. PVC SWR Couplers play a crucial role in SWR systems, allowing for the assembly of straight pipe runs and facilitating proper drainage of soil, waste, and rainwater from buildings.