1. Pressure regulator with water filter: The improved pre-filter comes with an accurate water pressure gauge, which can monitor and adjust the outflowing water pressure in real time. The pre-filter itself comes with a 1-inch thread and an additional adapter for 1/2-inch size. Please check the size you need before purchasing. 2. Reusable water filter: The pre-filter can be used in various domestic water devices. It can effectively filter impurities, reduce scale clogging, extend the life of the equipment, and protect the entire living water supply system from the source. (No drinking water filter). 3. High-quality water filter: The filter is made of food-grade safe 304 stainless steel with a filtration accuracy of 40 microns, which is not easy to corrode and rust. The interface is made of brass, which is durable and safe. The explosion-proof transparent filter housing is made of aviation polymer material and is antifreeze. 4. Easy to install: The quick-release filter element is easy to install without professional guidance. The water filter should be installed vertically to the pipe with the drain ball valve facing down. The arrow on the valve body points to the direction of water flow. After installation, the drain ball valve is closed. 5. Easy to clean: If there is adhesion on the pre-filter screen, it should be cleaned in time. Open the drain ball valve to drain the strainer.