1. WHOLE HOUSE PREFILTER: Dual filtration is more effective. The spindown sediment filter for the whole house is designed to prevent impurities such as sediment, deposits, rust, calcium, sand particles, and other contaminants from entering your home and affecting your family. Enjoy cleaner drinking and cooking water with this flushable and reusable filtration system. 2. PROTECTION: Filters large impurities in municipal tap water like sand, rust, worm eggs, and lime colloids. Protects all household appliances, washing machines, dishwashers, water purifiers, and water heaters. 3. 100% SAFE MATERIAL: Duallayer 40micron stainless steel mesh filter made of foodgrade material to reduce and trap particles larger than 40 microns (half the thickness of a human hair!) from entering your home. Valve head made of quality brass. The transparent sieve filter shell withstands a burst pressure of over 725 psi (5 MPa) and features freeze and water hammer resistance. Added frostproof material and design, temperature range. 4. FLEXIBLE INSTALLATION CONNECTIONS: Uses a 316 stainless steel filter element for more convenient filtration and cleaning. Siphon front flush backwash for thorough cleaning without clogging—no need to open and clean manually, just open the drain valve monthly. Features a cleaning timesaving function that can record the time of each cleaning.