Using peristaltic pumping, the chemical metering system delivers metering accuracy of ±1 percent and better reliability than diaphragm pump systems, according to the manufacturer. There are no backpressure regulators or de-gassing valves required and maintenance is a simple one-minute tube change. Designed for easy operation and low maintenance metering of tough water purification chemicals like sodium hypochlorite and ferric chloride, these ARRA compliant chemical metering systems are also very easy to install. The systems provide customers a turnkey wall or floor mounted solution for precision metering — including the pumps, valves, pressure relief, gauges, calibration column, leak detection and all interface pipe work. The system can be directly tied into customer SCADA systems via analog, digital or PROFIBUS control.