Features: Using solid brass for valve core, durable and not easy to rust. There is a filter screen at the connection of cold and hot water to protect the water from other impurities. Wall-mounted bathtub thermostatic mixing for valve is easy to install and suitable for most water heaters. Easy to control the amount of hot and cold water, adjust the water temperature as needed. Built-in temperature control safety device, automatically shut off hot water when there is no cold water, to protect scalds. Specifications: Material:Brass Size: Approx.11.5x6.2cm/4.52x2.44in Working pressure: 0.05-1mpa Recommended pressure: 0.1-0.5 mpa (a relief for valve is required for pressures above 0.5 mpa) Standard pressure: dynamic pressure 0.30.02 mpa Cold water supply temperature: 4C-29C Hot water supply temperature: 55C-85C Recommended normal use temperature: 60-70C Water temperature control range: 20C-50C Security button temperature: 38C Thermostatic mixing for valve is an accessory product specially developed for hot water system. It is widely used in electric water heaters, pipeline water valves, washbasins, bidets, showers, solar water heaters and central hot water supply systems. It can also be applied to electric water heaters and solar water heaters. Users can adjust the mixing temperature of cold and hot water according to their needs. The required temperature can be quickly reached and stabilized, ensuring a constant water temperature and is not affected by changes in water temperature, flow, and water pressure. When the cold water is interrupted, the water mixing for valve can automatically close the hot water within a few seconds, which plays a role in safety for protection. Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1x Thermostatic for Valve