Abstract: An assembly which includes a linkarm joining a valve having a rotatable mounted first shaft on which a butterfly is mounted and a actuator having a second shaft which reciprocally moves in a linear path. The linkarm includes a plate having first and second apparatus for engaging the first shaft and first and second apparatus for engaging the second shaft. The first and second apparatus for engaging the first shaft includes apparatus limiting engagement between the first shaft and the first and second apparatus for engaging the first shaft to specific angular positions. The specific angular positions are rotated with respect to each other in some embodiments.