Sotras was founded in 1975 as a trading business and over the years has transformed itself into an important brand for industrial flters.Sotras manufactures and distributes its own products in Europe and throughout the world. Today Sotras is supplying a top quality range ofindustrial flters and has specialized in manufacturing flter elements for compressors, vacuum pumps and compressed air applications tosuit most requirements in these felds. Sotras can boast its established experience and skill in designing and manufacturing high quality air/oilseparators specifcally for installation in rotary screw, vane compressors and vacuum pumps.
With regards to vacuum air flters, while in the past Sotras was merely a distributor, over the past 10 years the company has been developing itsown production line of housings for which new technologies have been implemented on which rigorous tests are regularly carried out. To copewith the growing demand for a wider range of products and the changing needs of customers, Sotras has made investments for manufacturingproducts for vacuum pumps in compliance with Sotras quality standards.
We guarantee that all materials used for our products undergo stringent quality tests and specifc treatments which ensure long life span andreliable performance. From the beginning, Sotras has strived for perfection by focusing on innovation, reliability and safety of the products.
In the same way, thanks to experience gained from many years of dealing with the compressed air industry, Sotras has developed a fexibleproduct handling system which allows the Logistic Department to satisfy customer requirements by providing faster, safer and reliable deliveries.
Sotras gives attention to human resources training, making the employees able to contribute, individually or collectively, to the attainmentof the objectives of the business. Sotras employees, in Technical and Commercial Departments, establish lasting relationships with customersby meeting their expectations through their personal and organizational skills.
Research & Development
Over the years Sotras has made considerable investments in the field of process engineering. It has arranged for and designed in house special tooling as well as unique machines and equipment for the different stages of working process which are constantly monitored in order to ensure a safe and correct manufacturing and use of the product.
With a view to constant improvement, Sotras has been deeply involved in the research for new materials as well as new process solutions and products, which has led to a contextual progress in tests and modifications that have played an important part in the quality and safety of the products.
The outcome of this activity has been a tangible increase in the reliability and efficiency of our products through improved manufacturing processes and this has resulted in more competitiveness and satisfaction in our market.
Quality & Certifications
Sotras filters undergo stringent quality control and are frequently tested in order to ensure satisfactory operation in the application of which they are designed. Evidence of the high quality of our products lies in the fact that Sotras manufactures original equipment for some of the most important compressor manufacturers, to some of which Sotras guarantees product exclusivity. For years now, checks on all incoming products and 100% of the outgoing finished products are ruled by a Control Plan deriving from ISO TS 16949 for the automotive sector. This document, which is constantly updated, indicates the control and related procedures of every step of the process and every characteristic of the product, including the project validation stages both of the actual process and of the products.
Our target has been to achieve the improvement of our product performance as well as efficiency and reliable repeat production. A special device has been designed that allows us to test the collapse or explosion resistance limits of our products under extreme working conditions at variable flow rates and at limit pressures.
In addition, laboratory devices have been used for the preventive analysis of production batches through simple but effective non destructive tests, such as the smoke test in order to detect product as well as process defects.
Based on ISO8573-2, using Johnson and Balston tests we regularly check the residual aerosol oil content (ppm) in order to guarantee this filtering performance on our products.
Sotras’ organization has been certified for its quality management systems since 1999.
Its first certification was in compliance with UNI EN ISO 9002-94.
In 2003, Sotras has obtained a new certification to UNI EN ISO 9001-2000 and in 2009 to UNI EN ISO 9001-2008.
In 2003 Sotras’ products have been certified in compliance with GOST-R 2012 (EAC Declaration) regulations for the Russian market.