Abstract: A mixer suitable for mixing a particulate material with a liquid. The mixer has a particulate material conduit, and a volute chamber disposed about the conduit. The volute chamber has a liquid inlet and an open lower end through which the particulate material conduit extends, to define an annular liquid outlet of the volute chamber. A transition cone communicates with the liquid outlet of the volute chamber and extends downward from it. At least a portion of the transition cone tapers inward while extending downward from a position not substantially lower than an outlet at the lower end of the conduit, to a position which is not substantially thereabove. Preferably the transition cone tapers as described, from a position above the conduit outlet to a position therebelow. A substantially straight downpipe is connected to, and extends downward from, a lower end of the transition cone.

Abstract: An adjustable cement head manifold connector including a first union having a passageway therethrough operably connected for a fluidtight connection with a cement head, a second union having a passageway therethrough having an end for operably connecting it in a fluidtight manner to a cement head, components for slidably connecting the first union and the second union in a fluidtight manner. The components for slidably connecting including a mandrel having one end fixed to one of the unions and slidably engaged with the other. The fixed end of the mandrel is preferably held with a combination of a sleeve surrounding the mandrel acting in conjunction with a nut which operatively engages and presses the mandrel against the seat at the opening of the union. The end of the mandrel which is slidably engaged utilizes a sleeve nut and O-ring arrnagement for fluidtight engagement against the mandrel.