Abstract: Level indicator for controlling the levels in a boiler or similar, comprising two conductive material rods, inserted in a single insulating material mold body, suitable for withstanding high pressures and temperatures, said rods protruding at different heights from the body; said insulating body being applied to a single hole of the boiler or tank in which the minimum and maximum level is to be monitored.

Abstract: A steam washing device comprising a metal body having a recess housing the part to be washed, the recess being provided with ducts for introducing the steam into the recess and discharging it from the recess; there being provided three ducts for introducing the steam and one for discharging the steam; the recess being defined by a wall of a sleeve provided with through holes communicating the recess with a steam expansion chamber; one of the ducts being adapted to introduce the steam into the expansion chamber, whereas the remaining two ducts are adapted to introduce the steam into the recess; a slit opening in the chamber forming a steam sucking duct that in turn is connected with the system exhaust duct.