Hard sealing butterfly valve is widely used in iron and steel industry; can be installed freely, without any directivity.

The opening and closing of YD747H Type hydraulic hard seal butterfly valve are achieved by mechanical actuator driving butterfly board through hydraulic device.

The opening and closing position of the butterfly board of the valve can be signaled by travel switch. The valve can be remote- controlled singly and also can be remote-controlled in a group. We can also input the signal to computer for program control. It is applicable to manual operate under the abnormal condition. 

The sealing surface gets an even pressure when it opens and closes. It has features of small moment, excellent sealing performance, long-term usage and so on. 

Hydraulic Hard Seal Double Eccentricity Butterfly Valve