Electric three-way ball valves can be divided into L-shaped and T-shaped. The L-shaped (Q44F) three-way ball valve is used for switching the flow direction of the medium and can connect two perpendicular channels; T-shaped (Q45F) three-way ball valve is used for medium diversion, merging, and flow direction switching. A T-shaped tee can connect three channels to each other or connect two of them. Three way ball valves generally adopt a two seat structure, but can also adopt a four seat structure according to user requirements