Cross Manufacturing Co., has created a stainless steel filter specifically designed for extremely corrosive environments like seawater and estuary water. Large scale installations including desalination plants, coastal power stations and cooling tower circuits can save a significant amount of money in relatively short timescales. Sea life centres, marine developments and other smaller applications can also use this product on a smaller scale. The company has designed reliable automatic filtration equipment capable of handling the strongest flow. Based on a patented stainless steel “zero gravity” filter coil, the technology behind the filter is currently in widespread use in water and wastewater treatment, heating and air conditioning plant rooms and other areas of the industry. One set of filter coils is fitted within one pod and each pod has the capability to backwash individually and automatically at the differential pressure value selected. The filtration process is constant, ensuring a minimal effect on flow and the elimination of any need for redundant filtration capacity. Automation is controlled by computer and in larger systems, actuation is pneumatic. The key behind the success of the project was to identify materials that not only withstand the corrosive nature of seawater but also the destructiveness of erosion caused by silt heavy estuary water. Extensive research concluded that a filter coil composed of alloy 625 combined with a large polypropylene housing, polyethylene pipework and bronze backwashing valves was the perfect solution to tackle these environments. Design on an all-metal construction is also underway to be used for high-pressure or higher temperature systems.
