A flanged butterfly valve is designed with flow optimization to ensure minimum effects on the flow when the valve is open. This ensures that the whole system can be operated, with the lowest possible head loss coefficient. The valve discs of butterfly valves are supported in the body with double eccentricity and low friction bearings provide maximum radial support for higher shaft loads.

sealing rubber is routinely produced up to a temperature of 120°C from EPDM and up to a temperature of 150°C from a special EPDM.