Why Use A Conical Reducer? Conductance.


What advantage does a conical reducer offer compared to a similarly flanged straight reducer? The answer is simple: Conductance!

Over the same length, a conical reducer has a larger mean diameter than a straight reducer with the same flange terminations. As illustrated by the equation for conductance (C) below, diameter (D) has a third-order effect on conductance. So, if you want to increase conductance, increasing diameter is the best place to start! Reducing length (L) helps as well, but length only has a first-order effect on conductance.

Eliminating bends in a vacuum system is another way to optimize conductance. When it comes to designing a system for optimal conductance, it helps to remember these three characteristics: Fat, Short, and Straight!

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