Apparatuses and system for retrofitting an existing water control valve mounted in a water distribution system that allows the user to quickly and easily replace the functions of the existing water control valve with updated and additional features in a new retrofit valve without having to remove or replace the existing valve manifold. The reactor includes an oxygen permeable ion transport membrane for separating oxygen from air. The nodes are classified into a plurality of non-overlapping classes. The cotton-graphite-silver composite material may then be dipped into a solution containing a conducting polymer, thus forming the electrically conductive composite membrane. The third authentication message includes an EAP method response message, the SNonce, and a first MIC that is generated according to the first PTK.