Pneumatic pneumatic clamp butterfly valve

Pneumatic hard-sealed butterfly valve

Pneumatic clamp hard seal butterfly valve

Pneumatic with manual butterfly valve

Pneumatic hard-sealed butterfly valve

Pneumatic powder butterfly valve

Pneumatic cement butterfly valve

Fluorine-lined flange pneumatic butterfly valve

Fluorine-lined pneumatic butterfly valve

Vacuum air operated butterfly valve

Pneumatic high-pressure butterfly valve

Pneumatically adjustable butterfly valve