... and machinery limit design, accurate position,avoid gear and switch.3, Multi-assembling, easy to install.4, Float ball structure, ... energy meters, air-warm valve.2, HVAC and fire work.3, Water equipment, uto-controlwatersystem, industrial mini-autoequipment4, Irragation equipment, ... heaters,washing machins, water heaters, industrial CWX-15Q 1/2" 3 way motorized bal valve for water treatment