The 10-FRD series Filters are used for tank top mounting in the return line of the system for continuous operation and provide protection for tank and operating pumps as a result of filtering out dirt from the installation runback. These filters are a combination of two simplex return line filters connected by at 3-way ball valve. The 3-way ball valve - which is outside the tank - functions as a common inlet for both the filter housings while the individual outlets at the bottom of the filter bowls discharge into the tank.
The filter bowl has an element locating spigot. The top cover is used for holding the element and is unscrewed for maintenance. The filters are also provided with an optional integral breather for additional protection of the system.