once the height is determined the assembly or disassembly of the bridge 11 could be carried out by exerting pressure on this system of flukes on both sides of the mechanism a threaded assembly with a valve rocker 7 symmetrically located in the center of the structure houses an adjustable pull rod 8 inside the pull rod 8 is actuated from a connecting rod 12 and moves a pin 9 since the pull rod is adjustable it has the purpose of making the anchoring bridge for holding the lid of the tank likewise adjustable by actuating a push button 10 the threaded assembly 7 is pushed through the shank 6 an actuation which is transmitted to the pin 9 and the latter pulls the tube 3 and closing disk 4 upwards causing the outlet valve to open a float 5 is fixed at an intermediate height of the overflow barrel tube 3 such that by actuating a push button 10 and consequently the assembly associated to it which will end in the pin 9 actuating the tube 3 it gives way to only one actuation of the push button shifting the barrel tube upwards and consequently opening the shut off valve 4 if pressure is not applied while the discharge occurs the barrel tube loses its ability to float as the water level descends to a level marked by the float 5 and it falls the water outlet valve being closed in this entire phase the emptying of.