Abstract: A superheated steam generator for crude oil recovery systems includes a centrally disposed second stage electric superheated steam generating tank surrounded and fed by a plurality of radially spaced first stage electric steam generating tanks. A primary manifold system supplies water to each of the first stage tanks and includes a central reservoir communicating with a plurality of constriction fittings. Each constriction fitting includes a tapered nozzle directed interiorly of the manifold toward a removable plug closing an associated inspection orifice permitting cleaning of the manifold and removal of the associated constriction fitting. Tubes coupled to opposite external ends of the constriction fittings deliver water to the first stage tanks, and are coupled to elongated tubes having portions extending longitudinally interiorly of the first stage tanks.