Neptune Chemical Pump”s PZiG Series electronic diaphragm pumps extend the capacity of the PZ Series of smart pumps. PZ Series pumps are designed for accurate, reliable injection of a wide variety of liquids, including moderate-viscosity and highly corrosive substances. The PZiG pump is available in four sizes from five GPH at 145 PSI to 20 GPH at 30 PSI. The units are available with PVC and Kynar liquid ends to handle viscosities to 50 CPS; an optional PVC liquid end can handle up to 1,000 CPS. The pumps feature a control panel with large buttons and a two-stage display LCD screen. Multiple inputs supports either pulse proportional control with multiplication and division function or four to 20 mA DC input for proportional control that will operate directly from pH, residual chlorine, or flowmeters without a separate PID controller. Pump outputs include batch signal and pulse.