Ravani Rizzieri was founded in 1992 and began its production and sales activities in 1993, flanking the production of Ravani Sifoni, which has been present on the market since 1951.
The first product to be marketed was the pipefitting called DUPLO ®.
.

DUPLO ® is a brass pipe fitting designed for connecting water and gas pipes, in PE (black polyethylene) and in metal: iron, steel, copper.
The special feature of this fitting is that it can be adapted for application on different materials simply by replacing the grip-ring, whilst all other details remain unaltered: shaft, nut, packing.
There is also a design feature that allows coupling of pipes with different diameters and in different materials.
For these reasons the DUPLO ® pipefitting was patented at European level and its application has been extended to a wide range of plants: civil, industrial and is also used in the assembly of various machines.
.

In order to extend its range Ravani Rizzieri has also included a number of items for heating and plumbing systems such as valves, collectors, copper pipefittings.
The company has specialised particularly in the production of components for heating and plumbing plants, especially valves for circulators, hot water expansion tank pipefittings, externally piloted check valves

In order to extend its range Ravani Rizzieri has also included a number of items for heating and plumbing systems such as valves, collectors, copper pipefittings.
The company has specialised particularly in the production of components for heating and plumbing plants, especially valves for circulators, hot water expansion tank pipefittings, externally piloted check valves.