Sigmadaf manufactures dissolved air flotation equipment (DAF systems) for industrial wastewater treatment.

All our dissolved air flotation equipment is designed and manufactured down to the last detail in our facilities, which allows us to have absolute control over the final quality of our equipment. In this way, we can offer maximum guarantees of efficiency, reliability and durability of our DAF systems.

play youtube video

We have a 2800m2 manufacturing workshop, which is equipped with modern handling, machining and assembly processes.

Our production areas are separated into different complexes. One of them is the part where the equipment is manufactured in stainless steel and carbon steel, in order to maintain and improve our standard production.

Our workers have been accredited by the International Business Control Agency in order to ensure the highest manufacturing quality of our products.

Our experience

Sigmadaf was founded in 1994 and since then we have performed hundreds of installations of DAF equipment for a wide variety of industrial sectors in all 5 continents.



Years of experience

We have carried out installations in all types of locations and terrains, from simple assembly projects at a client's facilities to complex infrastructures in difficult to access terrains.

Our dissolved air flotation systems are a highly efficient technology for the separation of pollutants present in an industrial effluent.

Thanks to the absolute control of our design and production processes, we can guarantee the maximum durability and efficiency of our DAF systems for the management of wastewater generated in industrial and municipal processes: reduction of chemical oxygen demand (COD) present in fats, oils, solids, biological sludge, colored organic matter and colloidal material.

If you wish, you canaccess the complete list of our references at

Our manufacturing process

The manufacturing of our DAF systems is carried out entirely in our facilities, which allows us to control every detail of each project. The manufacturing process involves the following stages:

  • Analysis

  • Manufacturing

  • 3D Design

  • Quality test

  • Delivery

We have the latest 3D design tools for the detailed design of all the equipment that is manufactured in our workshop.
Thanks to the complete integration of the design and construction process, we minimize all the failures that could occur during the manufacturing process and increase the quality and efficiency of our equipment.
One of our objectives is to provide our equipment with sections that favor structural rigidity without adding unnecessary elements to the assembly. This aspect has been achieved through:

  • Laser cutting of all equipment parts
  • Joining of parts through a process and order defined by 3D models
  • Modularity
  • Materials and finishes

Each component of our dissolved air flotation systems is identified with a unique code to control the status of each part and simplify the subsequent assembly.
Regarding the metallic parts of our machine (chassis, structure, reinforcements, etc.) this code will be laser engraved so that, at the time of assembly, the error will be completely eliminated from the process.) this code will be laser engraved in such a way that, at the time of assembly, the error is completely eliminated from the process.-
Finally, before sending the equipment to the customer, we carry out the relevant quality tests to ensure that the machine will be delivered in perfect condition and ready to operate.

COATED CARBON STEELCarbon steel is used for the production of a wide variety of products due to its strength, hardness and ease of welding. Our carbon steel is coated with a zinc layer to protect it from humidity, thus preventing rust and corrosion.
POLYPROPYLENE - (PP)Polypropylene (PP) is corrosion resistant to both acids and alkalis. It is also highly resistant to high temperatures. Thanks to these characteristics, it is a perfect material for desalination projects in seawater and oceans.
STAINLESS STEEL AISI304Type 304, with its chromium-nickel content and low carbon content, is the most versatile and widely used of the austenitic stainless steels. Its alloys are all 18% chromium, 8% austenitic nickel alloy modifications. Type 304 proves to be resistant to oxidation, corrosion and durability.
AISI316The difference between 304 and 316 has a simple answer: 304 contains 18% chromium and 8% nickel, while 316 contains 16% chromium, 10% nickel and 2% molybdenum. Molybdenum is added to help resist corrosion from chlorides (such as seawater and de-icing salts).
SUPER DUPLEXSuper Duplex stainless is a mixed microstructure of austenite and ferrite (50/50) that has improved strength over ferritic and austenitic steel grades. Duplex alloys have higher strength and better resistance to stress corrosion cracking than most austenitic alloys and higher toughness than ferritic alloys, especially at low temperatures.


At Sigmadaf we have the most prestigious international certifications that accredit the quality of our products, processes and facilities.