Easy to adjust knob that can be loosened with a screwdriver to influence water flow; 0-160 psi range. Great for use with our portable water heaters; recommended for motorhomes, motorhomes, etc. ! An included gauge shows pressure with clear and exact precision and an included strainer is easy to remove and clean, helping water flow. Lead-free brass, standards compliant potable/potable water. The direction of flow is clear by the markings on the piece. Product Description This water pressure regulator Brass RV is important for any water system because it shows water pressure and helps you keep the system in good working order. Our regulator comes with many features, such as an easily adjustable knob to control the flow/pressure, a gauge to tell you the exact water pressure, a filter to remove debris in the water and increase the pressure. system efficiency, and easy-to-read flow directions on the regulator body. Additionally, the reducer valve is designed to reduce noise caused by changing water pressure. High quality lead-free brass will help ensure a healthy system, making this a perfect part to go with our portable water heaters. The interior parts are made of materials (safe for drinking water) that are resistant to scaling, which ensures a long life of the system. The body design prevents damage from sudden pressure fluctuations which can cause premature wear. We strongly recommend using this regulator with an RV so you can enjoy your trip or vacation without worry about your water system pressure. Note: The data is all manual measurement, please allow 1-3cm error; due to the light and display difference , there would be some color difference, please refer to the actual item received.