An automatic regulator of the air intake in a tank installed in a circuit
for the production of compressed air wherein the regulator provides that
the intake orifice (7) which aspires external air is operated in
opening/closing by means of a disk shutter. The disk shutter is provided
with a tang which idly slides on a central hub. The disk shutter is
subjected to the biasing action of a spring which sits in the hub and to
the balancing action of a flux of air removed from the separator tank.
