Stator: Located among the pump and turbine, it redirects fluid returning from the turbine for the pump, increasing effectiveness by increasing torque output at very low speeds. The control of the oil pressure inside the lock-up clutch is finished by two valves: the relay valve and also the signal valve. https://rowanzfijl.blogkoo.com/the-best-side-of-torque-converter-clutch-53628170