Manufactured using modern means and facilities (ISO 9001-2000), under constant control and having a perfect finish (CE/PED standard). All steel filters are coated (see Coating). All filter bodies are also available in stainless steel 304 and 316. The plastic filters are provided with a set of rings as the filter element.

UDI® filters stand for effective and reliable water filtration!

Coating

UDI^® products made of carbon steel 37 are provided with a perfect polyester coating offering maximum protection against corrosion as well as resistance to the nutrients used in the water.

In preparation for the coating, the worked steel is cleaned with a level SA 2½ steel product according to ISO 8501. Thereupon, the filters are provided with a special layer of zinc phosphate. This treatment ensures proper adhesion of the coating and protects against rusting through from the inside.

The polyester coating is subsequently applied electrostatically, both internally and externally, before being furnace-hardened. The whole process involves 7 steps, and results in a perfect coating having a thickness of approx. 100 microns. Our standard colour of the polyester coating is RAL 5012.