Description: 【Universal Compatibility】: Designed for instant electric water heaters, this Thermostatic Mixing Valve is compatible with both cold and hot water systems, allowing you to adjust the water flow to achieve your desired temperature 【Efficient Temperature Regulation】: While it does not have a heating function itself, this Shower Mixing Valve assists your water heater in regulating the temperature by controlling the inflow of water, ensuring a comfortable shower experience 【Metal Construction】: Made from quality metal, this Temperature Constant Control Valve ensures long durability and reliable performance in various conditions 【Versatile Connection Interface】: Features a 4 point universal interface with both internal and external threads (2cm external thread), making it easy to install on most standard plumbing systems 【Convenient Design】: Equipped with an adjustable nut for easy installation and adjustment, this valve is designed for user friendly and maintenance Specification: Material: Metal Size Chart: 6.3cmx2cm/2.48inchx0.79inch Package Includes: 1 Thermostatic Mixing Valve