Is There A Difference In Effectiveness Between Plastic And Metal Diverters?

Material Differences

The primary difference between plastic and metal diverters lies in their durability and resistance to corrosion. Metal diverters, typically made from materials like aluminum or stainless steel, can withstand harsh weather conditions and last for decades with minimal maintenance. In contrast, plastic diverters are more prone to degradation and cracking, typically lasting around 5-7 years before replacement is necessary.

Design and Functionality

Regardless of material, the design and functionality of a diverter remain crucial in ensuring effective first flush functionality. A well-designed diverter should be able to divert the initial flow of water, which may contain high levels of debris and contaminants, while allowing clean rainwater to flow into the storage tank. A common technique is to use a 1:10 ratio for the diverter’s inlet and outlet diameters to minimize water pressure and optimize flow rates. A typical diverter size for a small residential system might be 2-4 inches in diameter, with a 1-2 inch outlet.