- Whole House Pre-Filter with a stainless steel filter at 40 micron to prevent particles such as sand, rust, and scale from entering your home. - Extends the life of water installations by protecting plumbing, kitchen and bathroom fixtures from sediment in municipal water that can clog taps, showerheads, water heaters, washing machines, RO water purifiers and other devices. - Water-pressure-driven automatic scraper with backwash: when the pre-filter becomes sediment-saturated, cleaning does not require dismantling pipes. Simply turn a key to the right to open the wastewater ball valve. Water flow drives a propeller at the bottom of the scraper, producing an automatic rotation and cleaner filter. - Water pressure monitoring: built-in pressure gauge provides real-time monitoring, helping household members respond to abnormal pressure. Safe residential water pressure range is 0.1 MPa to 1 MPa. - Use scenarios: install at the main water line in new or existing homes to protect all fixtures and appliances; protect kitchen and bathroom fixtures, water heater, washing machine, and RO purifier from sediment in municipal water; monitor and manage pressure with the built-in gauge to avoid overpressure in homes with variable water pressure.