Central Whole House Prefilter First Defense of Whole House Whole House Pre-Filter with a 40-micron pore size stainless steel filter is designed to prevent particles such as sand, rust, and limestone from entering your home. Prolongs Water Facilities' Lifespan Protects household plumbing, kitchen and bathroom equipment from particulate impurities in municipal water, which can block water taps, shower nozzles, water heaters, washing machines, RO water purifiers, and other water-related equipment. Water Pressure Drive Auto-Rotating Scraper Backwash When the prefilter becomes saturated with sediment, there is no need to dismantle pipes or fittings for cleaning. Simply turn the sewage ball valve to open it. The water flow drives the propeller at the bottom of the scraper, creating an automatic rotating effect that cleans the filter mesh. Monitor Water Pressure Built-in water pressure gauge allows real-time monitoring of water pressure. Homeowners can respond promptly to abnormal pressure conditions. Recommended household water pressure range: 0.1 MPa to 1.0 MPa. Featured Material The 40-micron filter mesh is made of 316L stainless steel. The head of the unit is constructed from lead-free brass, ensuring long service life. The heavy-duty, food-grade transparent housing is BPA-free and has passed a 150,000-cycle water hammer test and a 1000 psi maximum pressure test. Flexible Installation This prefilter comes with 1-1/2" and 3/4" male NPT connections. It is compatible with various pipe types. Customers may need to purchase additional adapters separately based on their copper, PEX, or CPVC piping specifications. Installation does not affect existing water pressure levels. Specifications: Type: Pre-filter Filter Material: 316L Stainless Steel Mesh Maintenance: Clean filter element every 15–30 days; replace every 1–3 years depending on water quality Housing Material: Food-grade, explosion-proof polycarbonate cover Head Material: Lead-free brass Water Source: Municipal water Flow Rate: 3000 L/H Filtration Precision: 40 microns Operating Pressure: 0.1–1.0 MPa (1–10 bar) Water Temperature Range: 0–40 °C Package Includes: 1 x Water Pre-Filter 1 x User Manual 1 x Special Wrench 2 x 3/4" MNPT Adapters