1.HOUSE PREFILTER:Double filtration is more effective. The Whole House SpinDown Sediment Filter is designed to prevent contaminants such as sediment, debris, rust, calcium, and sand granules along with other impurities from reaching your home and family. Enjoy cleaner drinking and cooking water with this flushable and reusable filter system. 2.PROTECTION:Use for filtering large particles of impurities in municipal tap water, such as sand, rust, worm eggs, lime colloids. Protect all household water appliances, washing machines, dishwashers, water purifiers, water heaters. 3.100% SAFE MATERIAL:Doubledeck 40 Micron food grade stainless steel mesh filter to reduce and capture particles larger than 40m (half the thickness of a human hair!) from entering your home. Valve head made of good quality brass. The transparent screen filter bowl can withstand a burst pressure of more than 725 psi (5Mpa), has antifreezing and water hammer resistant capabilities. It has an antifreeze material and design, temperature range 10 to 85 degrees Celsius. 4.FLEXIBLE INSTALLATION CONNECTIONS:Use 316 stainless steel filter element for more convenient filtering and cleaning. Siphon frontwash backwash, wash more thoroughly without clogging, no need to open and clean, only need to open the sewage valve every month. It has a cleaning time memory function, can record the time of each cleaning.