SWR Pipes vs PVC Pipes: Key Differences Explained

PVC (polyvinyl chloride) pipes and SWR (soil, waste, and rainwater) pipes are two of the most popular choices for piping systems. While they might come across as the same to a layman, structurally these two types are different. Interchanging these two types can cause plumbing failures, leakages and structural damages over time. To ensure a robust plumbing system, it is necessary to understand the difference between the PVC and SWR pipes.

What is a PVC pipe?

PVC or Polyvinyl Chloride pipes are widely used across residential, commercial, and agricultural sectors. These pipes are primarily used for fluid conveyance under pressure. They are engineered specially to handle clean water distribution in borewell systems and irrigation systems. Their rigid uniform walls are designed to stay intact when connected to pumps or overhead water tanks.

What is an SWR pipe?

SWR stands for soil, water and rainwater. Unlike PVC pipes, SWR pipes are exclusively designed for non-pressurised and gravity-based drainage applications. SWR pipes are engineered for inner and outer building drainage systems. They are also used for rainwater harvesting and ventilation lines. But SWR pipes are not exactly usable for pressurised water supply.

Key differences between PVC and SWR pipes:

To choose the right product for specific applications, we will discuss the difference between structure, performance and design mechanics between the two pipe types.

PVC pipes

• Standard PVC pipes and fittings are designed for high-pressure clean water supply applications like drinking water distribution and irrigation systems.
• Engineered to withstand high hydraulic pressure generated by pumps and overhead water tanks.
• PVC pipes depend on permanent chemical solvent welding for bonding and fittings. Provides a leak-resistant seal even under constant internal pressure.
• Graded by wall thickness and pressure capabilities, commonly referred to as ‘schedules’ and ‘pressure classes’.
• Feature a standardised smooth internal surface that minimises friction and maintains a constant water flow.

SWR pipes

• Pvc SWR pipes are designed for non-pressure drainage, sewage and rainwater removal using natural gravity and slope mechanisms.
• Used for drainage systems in soil/waste displacement from kitchens, bathrooms and even heavy rainwater management systems.
• Grading is done by specific functional roles like Type A (thinner walls for ventilation and rainwater harvesting) and Type B (thicker heavy-duty walls designed for solid waste displacement).
• SWR pipes are built to handle vibrations and use versatile ring-fit and push-fit elastomeric sealing rings to absorb them.
• The ultra-smooth bore is specifically designed to prevent solid waste, dirt and bacteria from accumulating inside the pipes.

How to choose the right one for your requirements?

• Household applications: For drinking water lines, use PVC pipes, as they keep the water clean and are non-corrosive in nature.
• Bathroom & Kitchen: SWR pipes are perfect for drainage lines like kitchen sinks and bathrooms.
• Mixed requirements: For water supply, PVC is the perfect solution, and SWR is for rainwater deposition and other drainage needs.

Maintenance for long-term use:

• Use the right pipe for the right application: Make sure SWR pipes are used for proper waste disposal and PVC pipes are used only for clean water distribution.
• Plan access: Use proper clean-outs for the SWR pipes to avoid maintenance issues.
• Standards: Use pipes that comply with regulatory standards.

Conclusion:

Finding the right pipe for the right kind of application is vital for your plumbing system. SWR and PVC pipes are made to serve specific purposes with efficiency. Proper management and usage guarantee that your piping system remains functional for decades.

For your plumbing system, choose only certified pipes to keep them leak-free and usable for long durations.

Check out the Trubore SWR Piping System Leaflet to find the perfect pipe for your requirement.