Introducing NextStep Stepper Motor Diaphragm Metering Pump - the ultimate solution for dependable, precise chemical metering. With a 5 year warranty on the entire pump, including the liquid end, and a 3,333:1 turn down ratio with 4800 steps, you can trust its efficiency and accuracy. Take full control with adjustable suction and discharge speed rates, rich I/O of peripherals, and included control cabling. Rest easy with the foot valve and integral level sensor, tubing and injector also included. Optional modbus RTU control interface available. Liquid end Pump Head PVDF and Diaphragm PTFE for maximum durability.