A pump group of a cooling system of a vehicle is provided. The pump group extends along a main axis and includes an axial flow stator that produces an electromagnetic action in a direction parallel to the main axis, and two command modules positioned at two opposite axial ends of the axial flow stator. Each command module has an impeller, an impeller shaft extending along the main axis and having an impeller end, the impeller being integrally connected to the impeller end, and a control portion configured to receive a rotational control action. A rotor is integrally connected to the control portion that is controllable in rotation by action of the axial flow stator.

A vacuum pumping arrangement comprises a first pump which has a first inlet and a first outlet. The first inlet is fluidly connected to a first common pumping line. The first common pumping line includes a plurality of first pumping line inlets each of which is fluidly connectable to a least one process chamber within a group of process chambers that form a semiconductor fabrication tool. The vacuum pumping arrangement also includes a reserve pump which has a reserve inlet and a reserve outlet. The reserve inlet is selectively fluidly connectable to each process chamber within the group of process chambers that form the semiconductor fabrication tool. The vacuum pumping arrangement additionally includes a controller which is configured to selectively fluidly isolate the pump from one or more given process chambers and selectively fluidly connect the reserve pump with the said one or more given process chambers.

A pump assembly is disclosed comprising a pump body having a first pump stage housed in the pump body including a fluid inlet and a first and a second fluid outlet. A flow feed chamber is housed in the pump body in fluid communication with the second fluid outlet. A second pump stage housed in the pump body is in fluid communication with the flow feed chamber and includes at least one fluid outlet connected to the second pump stage. A valve assembly is operable into a first position to fluidically connect the fluid inlet through the first pump stage to the first fluid outlet. The valve assembly is further operable into a second position to fluidically connect the first pump stage to the second fluid outlet and the flow feed chamber and the flow feed chamber fluidically connected to the at least one fluid outlet through the second pump stage.

A multi-switch pump assembly is disclosed that facilitates switched flow and/or mixed flow from the pump assembly. The multi-switch pump assembly comprises a pump body, an electric motor, a rotating motor shaft, a first pump stage and impeller, and a second pump stage and impeller. The first pump stage includes a first inlet and first and second outlets disposed about the pump body. The second pump stage includes a second fluid inlet connected to a mix chamber. The mix chamber further connected to the second fluid outlet of the first pump stage. The second stage further includes a second and a third outlet disposed about the pump body. An actuator connected to a valve assembly is arranged to operate and place the valve assembly into at least a first, a second, a third and a fourth switched positions to direct fluid flow between the first and the second pump stages and the first, second, third and fourth fluid outlets.

Wakeboat ballast pump systems and methods are provided to monitor the operational condition and parameters of wakeboat ballast components. Systems and methods for sensing and measurement are provided to detect parameters associated with wakeboat ballast pumps and compartments, including systems and methods that can economically retrofit into existing wakeboat ballast systems. Systems and methods are also provided to enable automated action based on various operational conditions and parameters to improve the safety, automation, performance, convenience, and marketing advantage of wakeboat ballast pumps.

A liquefied gas unloading and deep evacuation system may more quickly, more efficiently and more completely unload liquefied gases from transport tanks, such as rail cars, into stationary storage tanks or into truck tanks. The system may utilize a two stage compressor, an electric motor, a variable frequency drive, a four way valve, a three way valve, a two way valve, a programmable logic controller based control system and pressure and temperature transmitters. The valving enables deep evacuation of the transport or supply tank to more completely empty the transport tank. The programmable logic controller and variable speed drive may be used to variably control the speed of the two stage compressor so that the system may be running as fast as possible during changes in ambient temperature and/or different stages of offloading the liquefied gases without exceeding the compressor's horsepower limit.

A system includes a pumping unit and a base unit. The pumping unit includes a plurality of tubulars and two or more electric submersible pumps (ESPs). The pumping unit further includes a plurality of valves associated with the plurality of tubulars, the plurality of valves each independently moveable between respective open positions and closed positions, wherein respective positions of groups of valves corresponding to operational configurations selected to adjust operation of the two or more ESPs. The base unit is adapted to receive the pumping unit and includes a subsea connector for receiving a production line and directing production fluid toward the pumping unit. The base unit also includes an isolation valve.

Wakeboat ballast pump systems and methods are provided to monitor the operational condition and parameters of wakeboat ballast components. Systems and methods for sensing and measurement are provided to detect parameters associated with wakeboat ballast pumps and compartments, including systems and methods that can economically retrofit into existing wakeboat ballast systems. Systems and methods are also provided to enable automated action based on various operational conditions and parameters to improve the safety, automation, performance, convenience, and marketing advantage of wakeboat ballast pumps.

A pump system includes dual centrifugal pumps mounted on a fabricated skid. Both pumps are belt driven by one motor. The pumps are piped with three two-way valves and crossover piping configured such that the pumps can be operated in either series or parallel flow using a single inlet and outlet for the system.

A method for determining a set of optimal operating parameters for a pumping plant that pumps a fluid medium by a set of multiple pumps connected in parallel includes: determining, from the set of pumps, a set of possible scenarios, each scenario indicating, for each pump in the set, whether the pump is running or not running; optimizing, for each scenario, a set of operating parameters including operating parameters of the pumps that are running according to the respective scenario so that all running pumps together bring a given input mass flow of the medium from a given input pressure to a given output pressure while minimizing a total power consumption of all running pumps, and assigning the found minimum power consumption and the corresponding optimal operating parameters to the respective scenario; and determining, from the set of scenarios, the scenario with a lowest power consumption.