... . Float ball structure,no leakage,especially suitable for heavy pollution conditions. 5.Good substitution for solenoid or pneumatic valve. 6. High protection ... ,solar water heaters,washing machines,water heaters,industrial humidifier.6.Solar thermal,under-floor,rain water,irrigation,plumbing service, ... or EMS)/Air/Sea 2-way lower current motorized ball valve with water treament,solar hot water system