The coal chemical control valve has bad working conditions, high temperature, frequent opening and closing, large opening and closing pressure difference, dry friction of coal powder and easy locking, which cause the valve to fail to open or close. The comprehensive requirements for the actuator are very high, the main shaft is easily deformed or even broken, the seal is prone to failure and air leakage, and the valve cannot be switched or the switching time is slow due to long-term use. Bigtork is equipped with multiple torque test benches to ensure that the torque of the actuator is truly up to standard. The cylinder barrel is processed with 3 precision grinding processes and thickened hard chrome plating. Seals, grease, shaft material and heat treatment are all in accordance with high standards. It is required to be selected to ensure the safety of use in harsh working conditions.