Float balls are objects that easily float in most fluids in the world due to the material used to make them as well as their shapes. Spherical and cylindrical float balls are the most common. Both strength and buoyancy must be observed in making float balls. However, the material must be either rigid or flexible but must withstand different pressures occasioned by fluids.
Monitoring of fluid levels in large containers is the main use of float balls. It is for this reason that they are used to demarcate surface levels of fluids in containers. Their use can also extend to translucent tubes where they are used in monitoring the fluid levels at any one given time. Buoyancy is the main premise on which float balls work. The specific gravity of the material to be used must always be less than that of the fluid in which the float balls are to be used. This is what guides the type of material that is to be used for making the float balls.
Plastic and stainless steel are the main materials used to make float balls. Several factors inform the choice of these two materials. In the case of plastic, it is a material that is known to be light hence very buoyant. It then follows that it can be used to make float balls for varied applications. Plastic float balls can however be limited by some other factors. Fluid type is one of such factors.
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There are fluids that would react badly when in contact with plastic materials. Much as plastic is buoyant enough in such fluids one needs a different material to make float balls. The best choice in this case is stainless steel. The reason why stainless steel is a good substitute for plastic in some fluids is mainly because it does not react with many fluids. The chemical composition of most fluids does not include chemicals that would react to stainless steel.
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There are many industries that use stainless steel float balls in the world. First of all, they are applied largely in the food industry specifically in food processing. Float balls are used in fluid food tanks so as to observe fluid levels. Stainless steel float balls come in handy since such food products may have chemical contents that could react to materials such as plastics. The pressure in food tanks also requires strong float balls which stainless steel guarantees.
Float balls are also used in chemical engineering yet again to check fluid levels. Obviously, some chemicals used in this industry are highly corrosive and would react with many metals. Stainless steel does not however react with most known chemicals used in chemical engineering. Chemical reactions also elicit increased pressure and temperature. Such conditions can only be curbed by using float balls that can stand such extreme conditions. Yet another reason for using stainless steel float balls in chemical engineering. Vacuum trucks that transport liquids such as water and sewage do also use steel float balls to demarcate fluid levels within them.