Take an empty two-liter soda bottle, wash it out, fill it with water, screw the lid on tightly and set it into your toilet tank, as far away from the flappervalve as possible.
拿一个两升的空汽水瓶，洗干净，装满水，旋紧盖子，放进马桶的水箱里，离舌形阀越远越好。
2
According to structural characteristics of a flappervalve, flapper valves, butterfly valves, ball valves, diaphragm valves, Angle valves, through the valve, three-way valve.
根据结构特点有挡板阀、插板阀、蝶阀、球阀、隔膜阀、角阀、直通阀、三通阀。
3
Sandvik Company Introduction 2. Sandvik Strip Area 3. Sandvik flappervalve production 4. Technical discussion.