The suction unit regulator consists essentially of: suction controller, an vacuum meter, a controller body and an adjustment flyer and another tap in the side to open and close the vacuum cleaner without having to open and close the other. Rotating counterclockwise the adjustment flyer increases suction as needed (normally from 0-760mmHg). If the vacuum is equipped with supports it can be mounted on wall bars or on a head beam. Male input G 1/4″ and output M16x1.5 (scale gauges expressed in mbar)