... Float ball structure, no leakage, especially suitable for heavypollution conditions.5, good substitution for solenoid valve.6, High protection class, can ... card meters, heat energy meters, air-warm valve.2, HVAC and fire work.3, Water equipment, uto-controlwatersystem, industrial mini-autoequipment4 ... ,washing machins, water heaters, industrial CWX-15Q 1/2" 3 way motorized bal valve for water treatment