PVC Pipe

PVC pipes should be buried at least 6 inches deep for residential sprinkler systems. In areas with heavy foot traffic or where freezing is a concern, burying pipes deeper is advisable to avoid damage. are popular for irrigation systems because they are lightweight, durable, and cost-effective. They are also able to withstand exposure to sunlight and can handle the pressure levels typical of irrigation systems.

The most common PVC pipe sizes for residential irrigation systems are ¾ inch, 1 inch, and 1½ inches. In many residential sprinkler systems, ¾" or 1" PVC is used for lateral lines that feed individual sprinkler heads, while 1" or larger pipe may be used for the mainline supplying water to the valves. Larger properties or commercial systems may use larger PVC pipes to handle higher water flow rates.

The pressure rating of PVC pipe depends on the pipe schedule and diameter. In irrigation systems, the most common type is Schedule 40 PVC, which typically has a pressure rating from 250 to 600 PSI, depending on the pipe’s size. These ratings typically decrease as pipe size increases.

With proper installation and maintenance, PVC pipes can last 30 to 50 years or longer in a sprinkler system. It's important to note that factors such as exposure to sunlight can affect lifespan. Furthermore, any cracks or breaks from outside forces will warrant replacement for that section of pipe.