Known on the market with SIRIT trade-mark, we produce brass push-in fittings for air brake systems on commercial vehicles. Together with the quick couplings we produce also cutting ring fittings in steel, inspired to DIN 2353.

Our products are sold worldwide through a sales network managed by us or by our regional specialized distributors.

Tosi F.lli s.r.l. pays attention to technical innovations and market demands and its Quality System is TÜV AND ISO 9001:2000 certified.

For more information you can visit our web site at

Air Braking Systems Components

What we offer

The company Tosi was established in 1964 for the research, design and production of precision-turned small metal parts for applications such as industrial valves, tapware, pipe fittings, the automotive sector and the electrical and electronic fields.
In 2000 Tosi entered the Air Braking Fittings business with the brand SIRIT quickly developing its products with the objective of making them safe, reliable, fast and easy to fit.
At present SIRIT fittings are successfully used by major trucks, trailers, other vehicle constructors and we are aiming to meet and offer our technology to agricultural machines constructors, dealers and distributors.

What we are looking for

We are aiming to meet constructors of machines such as tractors, trailers, agricultural machines (harvesters, machines for the preparation of the soil, combined machines, ploughing, ect.
We would like to meet also dealers and distributors of components and spare prts.


  • Tractors
  • Mobile loading machines
  • Transport technology
  • Machinery and equipment for forest management, municipal applications and landscape care
  • Agricultural electronics, equipment for measuring and weighing
  • Components, spare parts, accessories
  • Others


Sales Italy - International

General Manager - Sirit Poland

back to list