The free floating ball drain valve is suitable for steam heating equipment and steam pipelines in industries such as petroleum, chemical, light industry, metallurgy, and power. It automatically removes condensed water and prevents steam leakage, preventing water hammer in heating equipment and steam pipelines and ensuring their operation under optimal conditions. This valve is also an energy-saving product that plays an important role in improving the thermal efficiency of heating systems and equipment, and saving energy.

The free floating ball drain valve is one of the structurally new and well-designed drain valves. It has the characteristics of simple structure (only one moving part), long service life, high thermal efficiency (it can remove condensate water close to saturation steam temperature), large displacement (it can continuously remove condensate water), and easy maintenance. Strictly follow national standards in manufacturing, and all performance indicators meet or exceed the requirements of national standards.

The free floating ball type drain valve utilizes Archimedes' buoyancy principle to make the floating ball rise and fall with the rise and fall of the liquid level in the body cavity, thereby opening or closing the valve seat drainage hole to form a drainage and vapor blocking action.

When starting work, open the manual vent valve located on the valve cover. After a large amount of cold air or non condensable gas is expelled from the body by steam and condensed water, close the vent valve. At this point, the drain valve is in a closed state, and as time goes on, the amount of condensed water flowing into the valve gradually increases. That is to say, when the liquid level in the body cavity rises to a point where the buoyancy force is greater than the weight of the sphere itself and the force of the valve port area, the sphere floats up and opens the valve port, and a large amount of condensed water is quickly discharged behind the valve.

During the drainage process, the liquid level gradually decreases. Due to uneven pressure distribution in the body cavity and low pressure at the valve port, the floating ball on the liquid surface is subjected to unbalanced force, pushing it to float towards the valve port until it is closed. At this point, the bottom pivot point of the body supports the floating ball, preventing it from continuing to descend and stopping the drainage. At this point, there is a certain distance between the liquid level and the valve port, thus forming a water seal to prevent steam leakage.