Which pipe material is commonly used for underground sprinkler systems?

The most commonly used material for underground sprinkler systems is PVC (Polyvinyl Chloride). PVC is favored primarily due to its durability, corrosion resistance, and relatively low cost. In addition, PVC pipes are lightweight and easy to handle, which simplifies installation and maintenance processes. Their smooth interior surface helps to reduce friction loss, allowing water to flow efficiently through the system.

While other materials like HDPE and copper are also used in some applications, PVC remains the most prevalent choice for underground sprinkler systems. HDPE can be a suitable alternative for its flexibility and resistance to cracking; however, PVC tends to be the standard in many residential and commercial settings due to its established performance record. Copper, while durable and resistant to corrosion, is generally more expensive and not as commonly used for large-scale underground irrigation installations. Steel, on the other hand, is not typically used underground due to its susceptibility to rust and corrosion.