Features: · Valve body: forged brass, long uselife · Actuator seat with stainless steel, Actuator crust with aluminum alloy · Automatic spring return and uses safely. · Synchronous hysteresis motor with fully closed and open · Easy to assemble and demount actuator and valve by manual operation · Rubber valve core: low noise when closing · Two-line control on/ off · Two selectable voltage, AC220V or AC110V, 50/ 60HZ