Line Source emitters use a twin-wall tubing with two pipe chambers. Which statement is true about the larger inner chamber?

• A. The larger, inner chamber is for water flow along the row length
• B. It provides decorative appearance
• C. It stores extra tubing
• D. It acts as a sensor port

Answer: (A)

The main idea is that line-source tubing uses the inner chamber as the continuous water path along the row. The larger inner chamber is designed to carry water along the length of the row, delivering it evenly to emitters spaced along that line. The outer chamber mainly provides protection and structural support, not water flow. Decorative appearance, storing extra tubing, or housing a sensor port aren’t functions of the inner chamber, making the water-flow role the correct choice.