With the increasing requirements for safe production, automatic fire-protection like electric or pneumatic control valve must be installed in petrochemical plant area and oil tank area, which can control the fire-protection devices in each area separately. Cut-off valves used for installation area or tank area can shut off the foam water strictly under the control of fire water and foam system of 0.8mpa all year round, which won high praise from users.

In an oil refinery, a valve well was submerged for more than 30 hours due to rain. When the staff opened the cover of electric actuator after draining away water, it was still dry inside and everything was fine.