Guide to Choosing the Right Piping for Your Lawn Sprinkler System
When setting up a lawn sprinkler system, one of the most important decisions to make is the type of piping to use. Typically, homeowners and irrigation installers opt for PVC (Polyvinyl Chloride) for their sprinkler systems, but there are other options available, including CPVC (Chlorinated Polyvinyl Chloride). This guide will help you understand the differences between PVC and CPVC, as well as other options, to make an informed decision for your lawn sprinkler system.
Understanding PVC Piping
PVC piping is widely used in lawn sprinkler systems due to its durability, resistance to corrosion, and ability to handle high water pressure. Additionally, it's cost-effective, easy to install, and readily available in hardware stores. For most applications, schedule 20 PVC is used for the lightweight and cost-effective option. However, schedule 40 PVC is often used for connections to the main supply where higher pressure might be involved.
The Role of CPVC Piping
CPVC is an alternative option, particularly useful in hot water systems due to its higher temperature resistance. While it can be used for lawn sprinkler systems, it is not as commonly preferred. Standard PVC is generally the most common choice for lawn sprinklers, owing to its cost-effectiveness and ease of installation. Another material, HDPE (High-Density Polyethylene), is frequently used for in-ground connections due to its flexibility and resistance to frost damage.
Choosing Between PVC and CPVC
For most lawn sprinkler systems, PVC is the primary choice. It is cheaper, more readily available, and easier to work with. However, CPVC can be a viable option in specific scenarios, such as areas with higher water temperatures. Typically, CPVC is suitable up to 200°F (93°C) compared to PVC's 140°F (60°C).
Some installation companies prefer PVC pieces and solvent-joint fittings due to their ease of transport and installation. However, with the advent of technologies like PEX (Cross-Linked Polyethylene), there has been a shift towards this material for in-house and hot water services. The plumbers for a new barn or farmshop might opt for PEX.
Installation Considerations
The installation of a lawn sprinkler system involves a significant amount of labor, including digging, laying out pipes, and installing sprinkler heads. Flexi-pipe, often black and flexible, is commonly used because it can easily move around in the earth. Special connections are designed for installing sprinkler heads.
Conclusion
In conclusion, while both PVC and CPVC are viable options, PVC is generally more commonly used due to its cost-effectiveness and wider availability. CPVC might be a better choice in specific hot water applications, while HDPE offers an excellent alternative for in-ground connections. Ultimately, the choice of piping will depend on the specific requirements and budget of the project.