Abstract: A viscometer system to measure the viscosity at high shear rates of thick liquids such as coal slurries includes a vessel to contain the liquid and a nitrogen pressure source connected to the vessel to apply nitrogen pressure to the liquid. A valve operated by a pneumatic actuator, preferably controlled by a computer, controls the orifice through which the liquid flows. The valve includes a ball member having a bore therethrough which bore, upon actuation of the valve, is aligned with the input and output orifices of the valve block to permit flow of the liquid.

Abstract: An oil burner nozzle for use with liquid fuels and solid-containing liquid fuels. The nozzle comprises a fuel-carrying pipe, a barrel concentrically disposed about the pipe, and an outer sleeve retaining member for the barrel. An atomizing vapor passes along an axial passageway in the barrel, through a bore in the barrel and then along the outer surface of the front portion of the barrel. The atomizing vapor is directed by the outer sleeve across the path of the fuel as it emerges from the barrel. The fuel is atomized and may then be ignited.