The ultimate in high-performance Butterfly valves, IV’s IVEX – series incorporates the ‘state of the art’ valve technology to outperform the competition. The double offset disc design nearly eliminates the seating wear due to the camming action of the disc during closing. The mechanical stopper on the valve body ensures precise valve closing every time to ensure specified seat tightness. The disc has a spherical profile and comes out of contact with the seat in the initial opening itself.