How does nozzle output change as wear progresses due to abrasive materials?

• A. Abrasive materials enlarge nozzle openings over time
• B. It remains the same
• C. It decreases to zero
• D. It becomes erratic

Answer: (A)

Abrasive wear from the spray mixture erodes the inside of the nozzle, enlarging the orifice over time. When the opening gets bigger, the same pressure pushes more liquid through, so the output increases as wear progresses. This change in flow is the primary way wear alters nozzle performance, and it also affects spray pattern and droplet size, which can impact application uniformity. The other options don’t fit because wear typically increases the opening rather than leaving output unchanged, reducing to zero, or making output erratic as the dominant, measurable effect.