Control device and method of making the same

In a control device having a housing means provided with a main lever pivotally mounted thereto by a pivot means and being operatively associated with a flapper to move the same relative to a leakport means in relation to pivotal movement of said main lever caused by the movement of one or more main diaphragms operatively associated with said main lever, said device having a feedback diaphragm operatively associated with a feedback lever that is pivotally mounted to said housing means and operatively associated with said main lever to cause pivoting thereof upon pivoting movement of said feedback lever by said feedback diaphragm, said housing means having a plurality of inlet means respectively leading by fluid flow paths in said housing means to said diaphragms, the improvement comprising a diverter valve means carried by said housing means for selectively diverting the fluid path from one of said inlets that normally leads to one of said diaphragms to said leakport means whereby said control device can act as a control to the branch signal from another control unit that is to be interconnected to another of said inlets.