Good sealing effect, easy to install. Make of brass, , anti corrosion, high temperature resistant. Mainly used for water flow switchs control of electric appliances such as water heaters, humidifiers, drinking fountains. When this product to a load 50W, intermediate must be added, otherwise it cannot be used. Working method: When there water flow in the water flow switchs and the water flow rate 1.5L/min, the in the water flow switchs will receive water., Manufacturer: ZXZZAS