How are splash pad zone valves maintained?

Zone valves split the pad into independent feature groups so the control system can sequence sprays and conserve water. Two common types: electric solenoid valves (lower cost, faster cycling, shorter life) and motorized ball valves (higher cost, longer life, slower). Quarterly maintenance: cycle each valve manually through the control panel and verify open/close response and downstream pressure change. Semi-annually: open the cabinet and inspect solenoid coils for burn marks or moisture intrusion. Annually: disassemble each valve, replace O-rings and seals, clean the seat, and re-grease moving parts with food-grade silicone. Stock 1-2 spare valves per zone count — failures during peak season are common and parts may have 4-12 week lead times. Common failures: stuck-closed (dead zone), stuck-open (water waste and feature won't sequence), and slow response (zone overlap).