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We have designed three different lever systems with the current-final lever presented here.
Image Added There are a number of constraints in the design of this lever arm.  First, we need to facilitate a way to attach the floats and counter-weight.  Secondly, we must have a way to adjust the distance the orifice travels down the arm.  It was also requested that the operators be given a means to manually "shut off" the flow. This can be accomplished by moving the orifice directly in line with the pivot.  We have also attempted to accommodate a second slide to facilitate attaching a second dosing pH control system.  It is preferred to both slides on the same side of the lever to allow the operator easier access.

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