The HydroMarine Water-to-Water heat exchanger is designed for facilities with hot-water or cold-water loops that need to add a new temperature control point. These units come mounted on 316SS Stands, with a Schedule 80 PVC Shell and Titanium tube coil for all aquatic applications. An integral control mounted on the unit controls a 3-way valve, allowing water through the coil when there is a call for heating or cooling.