Hundreds of valves are used to control every aspect of its operation in a single power plant. More and more valves with controlling actuator are used for vast field. What's more, valve and actuator required operate at high pressures, temperature as power plant are forced to additional demands.
Now let us talk something about select actuator.No matter for pneumatic actuator or electric actuator, we need to get the torque of valve and then medium type. If the medium is steam or non-lubricated medium, 25% security value shall be added in torque; If the medium is non-lubricated medium, 60% security value shall be added; 100% security valve shall be added when the medium is non-lubricated media gas transmission powder.
For selection pneumatic actuator, there are singe action pneumatic and double action pneumatic. Learned into air supply pressure and check torque table of single-acting and double acting, finally select the suitable pneumatic actuator.
The correct actuator with valve bring safety operation and longer life time.During mounted valves with actuator, the best postion is actuator center aaxis and valve stem coaxial.
After assembling, actuator and valve shall be test together. The valve is smooth rotation, without pause and creep while valve have repeatedly tests of open and shut.
