Three Stage 20 Inch Whole House Water Softening Purifier. This water filter is perfect for Homes, Apartments, Cottages, RV. (This Unit Accept Filter Size 2.5 inch X 20 inch). The exchangeable cations are sodium. The calcium and magnesium ions are exchanged for an equivalent number of sodium ions. The resin, once exhausted, i. All the available sodium ions have been exchanged must be re-charged. 3 Stage White Steel Mounting Bracket. Set of 3 filters. 2 x 20 inch Slim Blue Filter Housing + 1 x 20 Inch Slim Clear Filter Housing, 3/4 Inch NPT with pressure release button. Opening Spanner / Wrench. One reinforced heavy duty PVC ball valve (maintenance free & corrosion free) + 1 X Hex Nipple Connect Filter Housings. Installation instruction are included. This system could start to generate the pure water at 50PSI. Cation Filter Flow Rate 5 GPM (MAX). Cation Filter Capacity : 2080 grains or 35,600 ppm. Maximum working pressure: 125 PSI. Maximum Operating Temperature: 125°F (52°C). Dimensions: H 26 inch x L 17 x W 7 inch. Weight: 24 lbs Approx. System Flow Rate capacity / GPM. 1 – 25 GPM for 3/4 inch Inlet / Outlet with Resin Filter. Pressure drop will be determined based on feed water pressure, filter cartridge selection, fluid viscosity, filter life and conditions. The item “3 Stage 20 Whole House Water Filter Softening Softener System With Ball Valve” is in sale since Wednesday, November 18, 2020. This item is in the category “Home & Garden\Kitchen, Dining & Bar\Small Kitchen Appliances\Water Purification\Water Filters”. The seller is “reverse.osmosis” and is located in Tonawanda, New York. This item can be shipped worldwide.