The purpose of ribs on the outside of a Wayne Sewer Ball is to

• A. Cause jet action to aid in the hydraulic flushing of the sewer line
• B. To add weight to ball
• C. To block debris
• D. To seal leaks

Answer: (A)

Ribs on the outside are there to create turbulence and direct the flow as water is forced past the ball. That interaction produces jet action and eddies that scour the pipe walls and help push debris downstream during hydraulic flushing. In other words, the ribs help the cleaning action by making the water jet around the ball, improving the effectiveness of the flush. They aren’t meant to add weight, block debris on their own, or seal leaks—that’s handled by other design features or components.