タイトルまたは説明

Pneumatic actuator installed on the top of the bonnet which controls the open and close of the valve by pneumatic pressure. Metal seal between the body and bonnet, back seal between the stem and the bonnet, easy for the change of sealing stuff under pressure.Sealing surface is hard faced or the QBQ with the peformance of ati-corrosion, wear-resistantance. The installed switch indichator are able to indicate the open or close state of the valve. Low operating torque.