The float valve floatingvalve can float on the tower plate and change its opening degree as the gas flow changes. There are many types of float valves, such as round valves and angular valves for bars. The main use of China is the round valve. One of the most commonly used is the F1 type, the domestic already has the ministry standard (JB1118). The standard regulation valve body material can choose carbon steel, stainless steel or acid-proof steel, light valve thickness is 1.5mm, weighs about 25g, heavy valve thickness is 2mm, weighs about 33g.