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4-way reversing valve with double channel design: We divided the slider of the 4-way reversing valve into two flow lanes, just like the highway, there are fast lanes and slow lanes, and vehicles (fluid) at different speeds can go their own way to improve the flow capacity to the maximum (highway can be really high speed), through the design of double flow lanes, We can increase the capacity of 4-way reversing valves (without changing the body size in advance) by more than 33%.