2.5 cubic foot Zeolite backwashing filter with Fleck 2510 SXT valve.
High purity natural zeolite is an excellent sediment filtration media. It has the advantages of high flow rate vs. low backwash requirement. The 13" filter requires about 10 gallons-per-minute backwash capacity, but supports a service rate of 17 gallons per minute. It has a nominal filtration rating of 5 microns—better than Filter Ag or Multi-Media.