This does a really good of regulating with the fluctuating water pressure. It is suitable for solar water heater with little adjustment. Try to keep the settings set close to your desired temperature as possible and let the mixing go to work. Feature - Color: As shown. - Material: Copper. - Size: 9 x 5 x 10 cm. - mixing with high flow and of accessories, suitable for domestic hot water, with or without (hot water circulation) small floor heating circuit. - The built-in temperature control device provides the safety function of scald prevention for domestic hot water system. - Suitable for homes with (hot water circulation) or floor heating. - Use a hot water unit to achieve a constant temperature range and a constant flow rate. - No matter how the temperature and water pressure change, it is stable. - Warm Tip: Dear buyer, due to lighting effect, monitor's brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you! Package list: 1 x