Profile: Neptune Chemical Pump Co. & Waters Equipment, Inc. manufactures chemical metering pumps. Our product line includes hydraulic diaphragm metering pumps, electronic diaphragm metering pumps, fertilizer pumps, chemigation pumps and accessories. Our accessories include sample coolers, relief valves, calibration columns and pulsation dampers. Our dampeners ensure a smooth & continuous flow, as well as eliminate pipe vibration & protect in-line instrumentation.