Abstract: A pump casing having a casing body is configured with a discharge formed in the casing body where a midline of the discharge is offset from a tangent line of the casing body and offset from a centerline of the casing body, such that the midline of the discharge is located along a point between the defined centerline and defined tangent line of the casing body.

Abstract: A pump casing having a casing body is configured with a discharge formed in the casing body where a midline of the discharge is offset from a tangent line of the casing body and offset from a centerline of the casing body, such that the midline of the discharge is located along a point between the defined centerline and defined tangent line of the casing body.

Abstract: A pump casing having a casing body is configured with a discharge formed in the casing body where a midline of the discharge is offset from a tangent line of the casing body and offset from a centerline of the casing body, such that the midline of the discharge is located along a point between the defined centerline and defined tangent line of the casing body.

Abstract: A solids entrainment and quick disconnect system for a vertical or submersible pump is disclosed in which a pump distribution plate having guide members is provided for positioning near the floor of a well or sump to facilitate the entrainment of solids into the pump inlet. The quick disconnect system comprises an angled discharge adaptor that allows the pump to be vertically lowered onto the pump distribution plate in a manner to not only assure registration and sealing of the pump inlet to the pump distribution plate, but to provide comprehensive mating and sealing of the pump discharge outlet to the discharge piping of the sump or pit.

Abstract: Dual purpose apparatus and process for increasing the efficiency of absorption of oxygen by a biodegradable waste in a continuous operation in a waste collection station and for removing the oxygen enriched waste from the collection station by separately introducing waste and oxygen, which may be air, into a collector under a highly agitated state, and agitating the air and waste under pressure in a collector by a partially recessed vortex type impeller as back pressure is provided to the collector either by a nozzle means or an outlet means. The collector is mis-matched relative to the impeller to increase the retention and mixing time of the air and waste in the collector.

Abstract: A pump assembly includes a shaft driven rotary impeller operating in a housing and adapted for pumping a stream of material-carrying liquid through a pump chamber in the housing, with an annular seal assembly operative about a portion of the impeller shaft where the shaft extends through a wall of the housing. An annular seal chamber about the annular seal is adapted for receiving impeller driven seal lubricating and cooling liquid from the stream. A vane arrangement causing a sweeping flow of the liquid moves through the seal chamber with flushing effect.

Abstract: An apparatus and method for increasing gas absorption in a liquid includes, in a first embodiment, gas injection airfoils at an inlet of an extended vertical tube and a pump at an outlet of the tube for drawing the liquid at a rate greater than the rise rate of the gas bubbles. An outlet of the pump preferrably includes a plurality of outlet nozzles. A second embodiment for use with a liquid or slurry includes a venturi gas inlet in place of the airfoils.

Abstract: An apparatus and method for increasing gas absorptiion in a liquid includes, in a first embodiment, gas injection airfoils at an inlet of an extended vertical tube and a pump at an outlet of the tube for drawing the liquid at a rate greater than the rise rate of the gas bubbles. An outlet of the pump preferrably includes a plurality of outlet nozzles. A second embodiment for use with a liquid or slurry includes a venturi gas inlet in place of the airfoils.

Abstract: A system and method of removing dissolved gases and volatile organic chemicals from a water supply is provided. Water is supplied under pressure to a contacting chamber in a manner wherein it causes air to be aspirated into the chamber for turbulent contacting with the water. The air and water are directed through the contacting chamber in a common axial direction. Either the water or air may be heated prior to introduction to the contacting chamber to enhance the effectiveness of the dissolved gases and volatile organic chemicals removal.

Abstract: A centrifugal oxygenator pump includes a bottom inlet into an impeller chamber, the bottom inlet having a venturi gas inlet for mixing gas with the in flowing liquid. The impeller chamber is of a frusto-conical shape within which is rotatably mounted a similarly shaped mismatched impeller, the impeller driving the liquid and gas mixture toward a toroidal outlet chamber and through an outlet to an outlet nozzle. The motor drives the impeller to attain a high specific speed so that an increased capacity and larger size oxygenator is provided with maximum efficiency and effectiveness.

Abstract: A centrifugal slurry pump includes wear resistant inserts on the wear faces of the first impeller shroud and the wear face of the front pump housing in the impeller chamber. The preferred embodiment provides hardened ceramic material inserts mounted in compression.

Abstract: Apparatus for increasing the efficiency of absorption of oxygen by biodegradable waste and particle break-up thereof, by introducing waste and gas, which may be air, into a collector under a highly agitated state, and agitating the air and waste under pressure in the collector by the impeller of a vortex type centrifugal pump as back pressure is provided to the collector. The collector is mis-matched relative to the impeller to increase the retention and mixing time of the air and waste in the collector.