The production of brass fittings by ELVIOM uses materials in compliance to European standards 12164, 12165, 12167 and 12168, as well the German standard DIN 50930/6 which specifies the brass constituents for suitability to drinking water.
The threading on the fittings is constructed according to ISO 228, a standard specifying final dimensions.
ELVIOM is certified to ISO 9001 by TÜV Germany and its products are distributed to the market having passed the following tests.
By means of a special projector, where the thickness of the walls and threading is checked.
Raw materials and final product are checked by a latest generation electronic durometer.
Tests are carried out under pressure 6 bar (950C) at the company’s laboratories.
The raw materials used by the company have undergone thermal processing (annealing). The fittings with female threading are subjected to thermal processing for a second time, remaining in an annealing furnace after production for 1 hour at 350°C. Thus processing stresses are eliminated and durability of the products is increased.
Strength test for torque by means of special torque wrench.
Regular testing in terms of alloy structure (metallography), by means of a mass spectrograph, as to their chemical composition, and a mercury nitrate test for remaining stresses.
Throughout production the threads, holes and dimensions are checked by means of special standards and spirometers. This results in retaining the correct tolerances in the threading.