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Butterfly valves VS
The VS, VS C and VS B series valves are butterfly-type valves. A circular valve plate with a sealing ring on the circumference rotates around an axis at right angle to the valve axis.

As a result, the valves leave virtually the entire cross section free, offering very good conductance. The valve bodies are made of one piece, machined from solid material, and require (in addition to the valve head seal) only one elastic shaft seal for rotational movement of the shaft. The valves provide low leakage and minimal degassing rate.

The VS C series features a valve seal made of perfluorelastomer material (FFKM).

PERFORMANCE FEATURES
  • compact, economic design
  • high conductance, low leakage rate
  • gas-tight against atmosphere in both positions
  • helium leak-tested
  • easy to grip, lever-operated, with position indicator



Name / Number Description Model Type Basket
665004 VS valves made of stainless steel VS 16 Small flange KF DN 16
665007 VS valves made of stainless steel VS 16C Small flange KF DN 16
665005 VS valves made of stainless steel VS 25 Small flange KF DN 25
665008 VS valves made of stainless steel VS 25C Small flange KF DN 25
665006 VS valves made of stainless steel VS 40 Small flange KF DN 40
665009 VS valves made of stainless steel VS 40C Small flange KF DN 40

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