Providing tight shutoff, Fisher® Z500 Ball Valves protect critical assets in demanding applications. Bi-directional sealing design offers solution to process back pressure and shutoff requirements in both flow directions, safeguarding control valves and other equipment in line. To help eliminate leak paths and withstand extreme temperature changes, valves have integral metal seat and self-energized metal body gasket. Live-loaded packing, side-mounted brackets, and fixed centerlines minimize wear.