Waterco HRV fiberglass filters embody the latest in fiberglass winding technology. Waterco’s fiberglass wound filters are available up to 2.5m in diameter and are made using the latest available filament winding machine. This machine faultlessly winds continuous strands of high quality fiberglass filament under controlled tension, creating a seamless one-piece vessel with refined consistency and superior quality. Fiberglass winding further strengthens the filter vessel structure so it can withstand a working pressure of up to 800kPa (116 PSI). The HRV series filters are constructed from anticorrosive, nontoxic materials and are engineered to withstand the high flow and pressures of todays pool and industrial systems.