The Adjustment Element (Control Bell)
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Depending on application th Varibell® control element is available in differing versions:


a) Full Bell Typ:VG

This is the standard design. Most of the Varibell® control valves are equipped with this bell. In this case the movement of the bell is comparable to a spherical valve. The pressure drop is effected in two steps. Inlet and outlet have the same shape. Equivalent flow in both directions is possible.

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b) Special-Control Bells

For specific applicatons especially adapted control bells are available.

By very fine machining of control groove in connection with 2 - stage pressure reduction, smallest KV values of 0,0001 can be controlled with an excellent resolution.


For example: