Float balls are objects that come in different shapes and they are buoyant enough to float in water and other common fluids. The object shapes vary from cylindrical to spherical. 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.
Float balls are mainly used in monitoring of fluid levels. They can hence be used for surface demarcation of fluid levels. Checking of fluid levels also allows float balls to be used in translucent balls. All float balls work mainly on the premise of buoyancy. 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. In selecting these two materials, several considerations were put in place. Buoyancy is the main informing factor in plastic as material used in making float balls. It then follows that it can be used to make float balls for varied applications. However, other factors must come into play. The fluid in question is one such factor.
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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 reduced reactivity of stainless steel is its main strength. The chemical composition of most fluids does not include chemicals that would react to stainless steel.
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Different sectors of life use stainless steel float balls. Food processing within the food industry is one of such sectors. Observation of fluid levels in food tanks is the main use of float balls in the food sector. Chemicals in food necessitate the use of stainless steel float balls. Due to the pressure that is emancipated in food tanks, stainless steel is also the material of choice.
Chemical engineers also use float balls in monitoring fluid levels. Chemicals that are mainly used in this industry can be corrosive. Stainless steel does not however react with most known chemicals used in chemical engineering. Chemical reactions also elicit increased pressure and temperature. The material used to make float balls for this industry must therefore be strong enough to withstand such conditions. Stainless steel therefore becomes the material of choice. Vacuum trucks that transport liquids such as water and sewage do also use steel float balls to demarcate fluid levels within them.