The NASH CL is perhaps the most popular liquid ring vacuum pump ever built. The reason? Nash rock solid reliability.Now, the engineers at Nash have brought new technology and innovation to your trusty NASH CL pumps.Nash has used its unrivaled knowledge of liquid ring pumping to improve the legendary CL design with new ECO-FLO patent-pending technology. The results:• Same reliability, same performance• Lower operating costs• A “green” vacuum pumpECO-FLO Benefits:• Reduces water usage by up to 50% • Inlet and discharge piping are unchanged - no process piping changes• Uses existing base, motor and drive• Potential payback of less than 12 months• Overhaul to exacting Nash standards at a Nash Service Center¬• Available in both cast iron and stainless steel• Nash warranty