World Leader In Industrial Mixing Since 1923. SPX FLOW's LIGHTNIN brand has 90 years of unrivaled experience in industrial mixing technology, process knowledge, and technological innovation. LIGHTNIN enjoys a global reputation for durable, long-lasting mixers, agitators, aerators, and flocculators for fluid process systems. We offer a full spectrum of impeller designs for diverse applications. In addition, we offer a worldwide service network, mixer repair, gearbox repair, and replacement parts programs. Look to LIGHTNIN for knowledge, technology and service excellence.