1. The Whole House Pre Filter features a stainless steel filter with a pore size of 40 microns, designed to block particles such as sand, rust, limestone, and sediment from entering your home. 2. EXTEND WATER SYSTEM LIFE: It protects your household plumbing, kitchen, and bathroom appliances from particulate contamination in municipal water, preventing clogs in faucets, showerheads, water heaters, washing machines, RO water purifiers, and other waterrelated appliances. 3. Water PressureDriven, AutoRotating Scraper, Backwash: When the prefilter accumulates sediment, there's no need to disassemble pipes or fittings for cleaning. Simply turn the key to the right, open the wastewater ball valve, and the water flow will drive the propeller at the bottom of the scraper, enabling automatic rotation for a thorough filter cleaning. 4. Monitor Water Pressure: The builtin pressure gauge allows realtime monitoring of water pressure. Household members can take action if pressure falls outside the safe range (0.1 MPa–1 MPa) to ensure water safety.