Floating ball valve The sphere of the ball valve floats. Under the effect of medium pressure, the sphere can produce a certain displacement and be pressed tight on the sealing surface at the outlet, ensuring the sealing of the outlet. The floating ball valve has a simple structure and good sealing, but a load of working medium sustained by the sphere is all passed on to the outlet sealing ring. Therefore, one needs to consider if the material of the sealing ring can sustain the working load of the sphere medium. This structure is widely used in medium and low-pressure ball valves. Fixed ball valve The sphere of the ball…