Pure Aqua Inc., of Mission Viejo, Calif., announces its MF-450 series of stainless steel, top-mount, media filters. Vessels are manufactured in either 304 or 316 stainless steel and have an operating pressure of 25-125 psi to suit most commercial applications. These systems are available with a variety of media from activated carbon, birm, and filter Ag to multi-bed combinations of sand, gravel, anthracite and garnet. Flow rates range from 10-150 gpm. Custom-designed systems are also available.