What is an SWR System?
SWR stands for Soil, Waste and Rainwater — the piping system that carries sewage, waste water and rainwater safely away from a building. A well-designed SWR system keeps your home hygienic, odour-free and blockage-free for decades.
Type A vs Type B Pipes
SWR pipes conforming to IS 13592 come in two classes. Type A pipes are used for ventilation and rainwater, while thicker-walled Type B pipes handle soil and waste discharge. Choosing the right type for each run ensures both economy and strength.
Ring-Fit vs Self-Fit Joints
Modern SWR systems use either ring-fit (rubber-seal push-fit) joints that allow thermal movement, or self-fit (solvent-weld) joints for rigid connections. Both seal reliably against leaks and foul smell and install far faster than old cast-iron drainage.
Why Choose uPVC SWR Over Cast Iron?
- Never rusts or corrodes — stays smooth and blockage-free.
- Lightweight and quick to install.
- Odour-sealed, leak-proof joints.
- Decades of maintenance-free service.
PNB Pipes offers a complete range of SWR pipes and fittings for clean, reliable drainage. Explore our SWR range or contact us for guidance.