AquFlow”s Series 100 solenoid metering pumps are designed for dosing chemicals and support control by manual knob, proportional by volume, 4-20mA signal for precise volume from 10% to 100% of max. flow. All models can be supplied with an optional removable power cord connector. Extra-silent versions are also available. Material options include polypropylene, PVC, PVDF, 316SS, and PTFE (pump head), PTFE (diaphragm), Viton, EPDM, silicone, and NBR (valves/o-rings).