Netafim Apollo Disc-Kleen Filter Battery, Twin, 5 Filters - 120 Mesh AC Solenoid (26ASK4PB5120AC)APOLLO DISC KLEEN AUTOMATIC FILTER A HIGH PERFORMANCE, RELIABLE, COST EFFECTIVE FILTRATION SOLUTION This filter offers maximum performance for systems requiring filtration for large volumes of water. A longer filter element with larger discs produces a larger filtration area and only 30 psi is required for backflushing. Made from high density synthetic materials, the Apollo filter is corrosion proof not just corrosion resistant. Available in 24VAC or