The plastic tube float flowmeter features a simple structure, light weight, corrosion resistance, nonbreakable, non-toxicity, odorlessness and ease of use.It is mainly used in industries such as chemical engineering, light industry, medicine, food, and environmental protection to measure the flow rate of single-phase non-pulsating liquids. It is mainly composed of a transparent plastic conical tube installed vertically with the small end downward and the large end upward, a float that can move up and down inside the conical tube, and nuts, connecting pipes, guide rods, stop pieces, etc.It is mainly divided into short tube type and long tube type. According to the connection way, it can be classified into plug-in pipe connection, threaded connection and flange connection.