TRAP ANTILIMESTONE FOR WATER-HEATERS  -   PATENT AR061208B1                            

         One of the problems caused from water-heaters is the production of solid limestone particles of various dimensions that end obstructing the mains and, above all, the flexibles of washbasins and bidet.

           There are several ways to resolve this problem, but they have often disadvantages, since they are expensive, complicated, and even little efficient.

           In the case of the cold water there is no problem. The problem is in the warm water, since the heat accelerates the chemical reactions and the limestone settles on the walls of the tubes forming layers more and more thick.

          In the coil of the water-heater, because of the abrupt variations of temperature, these layers become crushed, and solid limestone particles of rather great dimensions enter in circulation in the mains, causing obstructions.

        The present device does not prevent the limestone-formation, but prevents that the same enters in circulation: the warm water coming from the heater through the flexible tube, enters in the main (arrowed ) while the limestone particles fall for gravity in the transparent nylon cylinder, screwed to the TEE and sealed with an O-ring.

          In order to empty it, the cylinder is easy unscrewed without need of tools, having only cure to close before the stop cock.
A stainless-steel filter, with a sub-millimeter mesh, placed in the escape of the TEE, prevents that eventual solid particles enter in circulation.

         The advantage of this device is that it is practical, simple, economic and of sure operation to 100%.

       The results are to the sight and they can be proven some hour after its installation. Moreover, this device needs neither spare parts, nor maintenance, nor chemical elements, and causes no disadvantages or limitations, being its purchase the only and low expense.

       The image shows the solid limestone particles produced from a familiar heater in the course of 4 weeks. The largest observed particles have the dimensions of 17x7x2 mm!

       It is superfluous to add that the transparent cylinder serves also as spy of the state of the coil: when little material falls, the coil is clean; when much material falls, this is a sign that there is too much limestone in the coil, and it is high time to clean it.                                       

       (photographs 2 and 3 have been obtained with a scanner, without use of any camera).      

dante bissiri 2004-2008