Product information/data for butterfly valves

Butterfly valveSOMAS butterfly valves are used in hundreds of thousands of installations in a variety of applications. Based on the experience gained from our many years of design and manufacture of metal seated butterfly valves we do not hesitate at this point to claim that our concept is the best on the market.


We do not intend to rest on our laurels, however. Our concept is, and will be, the basis for future development of metal seated butterfly valves. Our R&D department is continuously at work further improving the quality and performance of our product line, in close cooperation with our customers who provide the feedback and application expertise needed to aim our research efforts in the right direction.

They make quite a team, our customers and our engineers. We are proud of them.


SOMAS butterfly valves have many advantages. They offer the following:

  • Made of stainless steel
  • Dimensions DN80 - DN1200
  • Pressure classes PN10 - PN100
  • Mounting between flanges, with lugs or flanged
  • Stainless steel seat is not affected by high flow rates replaceable seat in alternative materials
  • Unique disc geometry which in combination with the homogenous seat acheives tightness to EN60534-4 Class V as standard
  • Advanced triple eccentric design acheieves excellent tightness


For more information about Butterfly valves, click on Product sheet (pdf) to the right of this page, and you will be proceed to our document library.


SOMAS Instrument AB : : +46 (0)533-167 00 : +46 (0)533-141 36