1. Center butterfly valve (also called centerline butterfly valve) The structural feature of this kind of butterfly valve is that the shaft center of the valve stem, the center of the butterfly pla...

When there is superheated steam or almost no condensate, and when the size of the trap is too large, condensate water can not ensure the bucket to float, which leads to the valve can not be closed ...

The key parts of the control valve should be inspected when a fault occurs