Basic Working Principles Foam pumps produce firefighting foam by mixing foam concentrate and water. This mixture is delivered to the fire area with high pressure and covers the fire, cutting off its contact with oxygen. The basic operating principles of foam pumps are:Foam Proportioners: These devices create a homogeneous foam solution by mixing foam concentrate and water in certain proportions. Proportioners automatically adjust the foam concentration depending on the water flow.Foam Production Systems: These systems produce foam used in firefighting by mixing the created foam solution with air. High pressure pumps deliver this mixture to the fire area and ensure that the fire is taken under control.Foam Pump Types Foam pumps used in fire trucks can be found in various types according to different fire types and needs. The main types of foam pumps are:Pressurized Proportioner Systems: These systems allow water and foam concentrate to be mixed under a certain pressure. It is widely used especially in large fires and industrial facilities.Low Pressure Foam Pumps: These pumps are systems that operate at low pressure and are used in smaller-scale fires. They have a less complex structure and can be put into operation quickly and easily.High Pressure Foam Pumps: These pumps, which operate at high pressure, are used in large areas and fires with high danger potential. High pressure allows the foam to reach greater distances.