Simplex Nitrate Removal System - WS1 Clack Valve INSTALLATION & USE Introducing the Clack Simplex Nitrate Removal System, a high-performance solution designed to transform your water quality.The nitrate reduction system comprises of a vessel housing nitrate-selective resin and a Clack valve. Nitrate-rich water flows through the resin, where an ion exchange occurs, replacing nitrate ions with chloride ions. The saturated nitrate on the resin is then regularly regenerated.Ideal for when a continuous supply of water isn't needed. For applications that require continuous supplies of water, we would recommend Duplex Nitrate Removal Systems . Installation should be carried out by or under the supervision of a professional. Regeneration is pre-set for 2am when water usage is low to guarantee an uninterrupted and dependable flow of soft water at all times. What is nitrate and where does it come from? Nitrates are naturally occurring compounds that are essential for plant growth, but whe