

Protego
About us
PROTEGO® is a world market leader operating with a large global network of subsidiaries and representatives. The PROTEGO® Team includes 10 distribution and after-sales service companies as well as 120 representatives in all continents.
Since 1954, PROTEGO® has built and provided devices and tank equipment, now with the help of more than 750 employees worldwide. We are the technology leader within our area of expertise. We provide global services for our customers which include research and development, application-specific engineering, overall protection system design and safety awareness training. Our customers know they can rely on our research capabilities, engineering expertise and high quality products for the up and downstream oil and gas, petroleum, chemical, pharmaceutical, and bio-energy industries.
PROTEGO® – The Trademark sets the Standard
Today flame arresters (FLAMEFILTER®) are used for many industrial applications. They are recognised as a safe principle for engineered explosion protection. Making high demands as to sealing of valves is beneficial in terms of both environmental and explosion protection. Quality is manufactured.
PROTEGO® - Core Competences for Customer’s Benefit
Where standard products do not meet the requirements, designs are modified to suit special applications. Qualified advice leads to economic solutions. Maintaining a worldwide network of PROTEGO® subsidiaries and representations we are on site when we are needed.
PROTEGO® - Products for safety and the environment
Explosion protection with PROTEGO® valves and equipment prevents disasters. Worldwide purchasing, modern manufacturing facilities, permanent quality control and global communication guarantee high quality of products and services. With products supplied and services provided, we are committed to safety and the environment:
PROTEGO® - I PROTECT.
Products
Diaphragm Breather Valve for Difficult Applications
PROTEGO® Diaphragm Valves function as pressure vacuum relief valves. The flexible diaphragm allows them to work as a dynamic flame arrester which provides endurance burning protection. For additional safety, these devices are equipped with a static flame arrester unit. For extreme cold weather conditions A specially designed valve seat, combined with the flexible diaphragm, prevents the diaphragm from freezing on the valve seat. For problematic products The only vent which works reliably with problem products such as Styrene or Acrylates.

Combined Breather Valve and Flame Arrester
Pressure / Vacuum Relief Valves with integrated Flame Arrester These valves are used to protect plant components (e.g. tanks, pipelines) from exceeding maximum allowable operating pressures and vacuum. They offer additional protection against atmospheric deflagration, and some valves also protect against endurance burning. 10% Technology 10% full-lift technology results in product savings (possible reduction of product losses greater than 30%). Extreme Tightness Lowest possible product losses and reduced environmental pollution. Integrated Flame Arrester Protection against atmospheric deflagration and endurance burning.

Breather Valves
In closed containers or tanks containing liquids, effectively managing pressure is crucial. To ensure secure operations, it is vital to have a dependable mechanism for releasing accumulated pressure and compensating for vacuum conditions. PROTEGO® addresses this requirement precisely through our Overpressure and Vacuum Relief Valves. These valves, equipped with weight-loaded or spring-loaded valve pallets, play a crucial role in maintaining optimal pressure levels within tanks. Whether dealing with overpressure or vacuum situations during processes such as loading, unloading, steam cleaning, or due to thermal effects, PROTEGO® valves offer a robust solution. Our valves, meticulously designed, function as pressure relief valves, vacuum relief valves, or combined pressure and vacuum relief valves. Industries such as oil and gas, petroleum, chemical, pharmaceutical, and bio-energy depend on PROTEGO® valves to ensure the safety and efficiency of their operations. The innovative design and superior performance of our valves make them the trusted choice for a wide range of applications in the industrial landscape.

Flame Arresters
A Flame Arrester is designed to allow the safe flow of gases and liquids while preventing flame transmission. Flame Arresters are composed of spirally wound metal bands with precisely reproducible flame-quenching gaps. These gaps are adjusted to the ignition transmission capability of explosive vapors. The FLAMEFILTER® is made of wound metal strips and forms an effective band arrester. This flame-quenching principle is applied in PROTEGO® end-of-line flame arresters and in-line flame arresters. When a mixture ignites in a gap, the flame spreads towards the unburned mixture. The volume expansion of the burned mixture pre-compresses the unburned mixture and accelerates the flame propagation. Heat dissipation to the large surface of the gap lowers the temperature below the ignition temperature, thus extinguishing the flame. The gap width and gap length determine the extinguishing effectiveness of the Flame Arrester. A narrower and longer gap extinguishes the flame more effectively, while a wider and shorter gap reduces the pressure loss. Experiments can determine the optimum solution between the two conditions.