Butterfly Valves


Double-offset butterfly valves in VAG’s product range

Through this geometry, the circumferential seal is moved away from the seat and thus the strain on it is relieved when the valve opens. This minimises wear and ensures a long service life. Thanks to VAG’s more than 50 years of experience in the manufacture and further development of butterfly valves, the company offers a range of products ensuring maximum reliability of function, highest energy efficiency and a long service life.

VAG EKN® Butterfly Valves are available in three series: H-Series, B-Series and M-Series

B-Series for basic requirements
As a robust and cost-efficient solution, the basic series can be used for standard shut-off tasks in water treatment and water distribution.

M-Series for medium requirements
Proven VAG quality with fully enclosed bearing for even more corrosion protection and a wear-resistant seat. An automatic sealing system which is independent of the flow and equipped with a special sealing profile resists even high gap velocities.

H-Series for highest performance
This series meets the most stringent requirements in water treatment, water distribution, in power plants and dams. Its innovative design with patented hydrodynamic disk, enlarged inner diameter and patented pressure-compensation channels saves energy.  Thanks to their special construction, the butterfly valves of the H-Series minimise pressure loss and turbulence in the outlet area. Their maximum corrosion protection ensures an extremely long service life even in the harshest operating conditions.

Applications of double-offset butterfly valves
Thanks to their safety of operation, their design strength and corrosion resistance, double-offset butterfly valves made by VAG can be used in almost any application, both as buried valves and as parts of a plant. Due to their great variety of materials and coatings, VAG EKN® Butterfly Valves cover a wide range of applications.

  • Water distribution
  • Water treatment
  • Wastewater
  • Dams
  • Power plants
  • Industry

Depending on the type, VAG EKN® Butterfly Valves are suitable for use with the following media:

  • Drinking water
  • Raw water
  • Cooling water
  • River water
  • Service water
  • Sea water
  • Aggressive types of water
  • Wastewater (in some cases/pre-treated)
VAG EKN® M Butterfly Valve epoxy

Double-offset flanged butterfly valve (resilient-seated) with epoxy coating, available with long or…

Remove bookmark Bookmark product
VAG EKN® M Butterfly Valve short pattern F16 - epoxy

Double-offset flanged butterfly valve (resilient-seated) with epoxy coating, available with long or…

Remove bookmark Bookmark product
VAG EKN® M Butterfly Valve rubber-lined epoxy

Double-offset flanged butterfly valve (resilient-seated) with rubber-lined seat and rubber-coated…

Remove bookmark Bookmark product
VAG EKN® H Butterfly Valve epoxy

Energy-efficient, double-offset flanged butterfly valve (resilient-seated) suitable for the highest…

Remove bookmark Bookmark product
VAG EKN® AWWA Butterfly Valve Type AWWA C504, Class 150

Double-offset flanged butterfly valve (resilient-seated) according to the AWWA C504 standard. Long…

Remove bookmark Bookmark product
VAG EKN® Hydropower Butterfly Valve Turbine inlet valve

Special butterfly valve, particularly suitable as turbine inlet valve. Customised double-eccentric…

Remove bookmark Bookmark product
Rubber-coated valves for the Thames Water Desalination

London‘s growing population and increasing temperatures are putting it at risk of drought. According…

Harbin-Mopanshan Water Supply Pipeline

To be able to control the water pressure and the flow rate over the entire distance and to…

The Klammstein Hydropower Station

The VAG EKN® Butterfly Valve in fabricated steel design was 100% leak-tight, worked troublefree and…

Rapid supply of drinking water for Ankara, Turkey

Immediate relief for severe water shortage in the Turkish capital Ankara, the capital of Turkey…