Oil filtration unit for removal of contaminants from oil including a housing with an inlet to receive contaminated oil from surroundings and release oil to an inner opening at a first pressure, an outlet adapted to release filtered oil to surroundings, and an oil filter for filtering oil in the inner opening of the housing. The oil filter includes an inlet with an outer surface, an inner volume to receive filtered oil at a second pressure lower than the first pressure, and an outlet inside the housing providing fluid/liquid communication between the inner volume and the housing outlet. The filter outlet includes a hydraulic resistance providing a fluid/liquid flow restriction between the inner volume and the housing outlet to increase the second pressure inside the inner filter volume and release the oil from the inner filter volume to the housing outlet at a third pressure lower than the second pressure.

Transmissions, filter assemblies for transmissions, and valve assemblies for transmissions are disclosed herein. A transmission includes an input shaft, an output shaft, and a hydraulic system. The input shaft is configured to receive rotational power supplied by a drive unit. The output shaft is coupled to the input shaft and configured to provide rotational power supplied to the input shaft to a load. The hydraulic system is configured to supply fluid to one or more fluid demand devices coupled between the input shaft and the output shaft in one or more operating modes of the transmission. The hydraulic system includes a filter assembly having a filter element and a valve assembly fluidly coupled to the filter element.

A method for servicing a section of a first flow line of a redundant flow line system with a second flow line in a closed-loop liquid cooling system. The method can include draining liquid from the first flow line through a liquid transfer assembly and servicing the section of the first flow line. The method can also include transferring liquid from the second flow line to the first flow line through the liquid transfer assembly and decoupling the liquid transfer assembly from the first flow line and the second flow line. The method can also include coupling the liquid transfer assembly to and between the first flow line and the second flow line.

A water heating and treatment system includes a water heater operatively coupled to a water heater controller, a hot water outflow line from the water heater, and a cold water supply line to supply water to the water heater. The cold water supply line includes at least one of an anti-scale device operatively coupled to an anti-scale device controller, and at least one sanitation device operatively coupled to a sanitation device controller. The mixing station is operatively coupled to a mixing station controller. The mixing station supplies heated water to at least a first temperature zone at a first hot water temperature. Controllers of the water heater controller, the anti-scale device controller, the sanitation device controller and the mixing station controller are co-located at a front of a single enclosure behind an openable door, the controllers operatively coupled to a supervisory controller.

A water purifier includes a raw water flow path into which raw water is introduced, a clean water flow path connected to the raw water flow path and having a water discharge nozzle disposed at an end, a filter device disposed in the clean water flow path, and to which a filter is installable to filter the raw water, a drain flow path branched off from the clean water flow path between the filter and the water discharge nozzle and connected to a drain port to drain water in the clean water flow path to outside, a drain valve configured to open or close the drain flow path, and a controller configured to determine a remaining life of the filter on a point in time at which the filter has been replaced and control the drain valve to perform a cleaning operation based on the remaining life of the filter.

In some embodiments, a system for pre-wetting a filter includes a filter, a piping system, a first gas, a second gas, a first buffer tank, and a second buffer tank. The first gas drives the solvent to clean the filter. The two buffer tanks store the solvent discharged from the filter. The second gas selectively drives the solvent in the first buffer tank to return to the filter and then to be discharged into the second buffer tank. Alternatively, the second gas selectively drives the solvent in the second buffer tank to return to the filter and then to be discharged into the first buffer tank.

Disclosed is a shower head and receptacle combination device with an outlet water filtering function, wherein by arranging a filter valve shell arranged in a device shell and mounting a filter element and a switching valve element in the filter valve shell, water flow can be filtered, and then filtered water is sprayed from a handheld shower head and/or an overhead shower head for a user to take a shower. The shower head and receptacle combination device has the advantages of good filtering effect, high water outlet pressure, small size and low cost.

Systems and methods for managing debris material in a fluid are described. In examples, the system may include a flow line that directs a fluid into an inlet of a barrel, through the barrel to filter at least some material from the fluid, and out of an outlet of the barrel. The system may also include a backflush line coupled to the flow line between an inlet valve and an inlet of the barrel and between an outlet valve and an outlet of the barrel. In examples, the system includes a pump positioned on the backflush line, where in a backflush mode, the inlet and outlet valves close to isolate the barrel, and the pump circulates the fluid through the backflush line and through the barrel in a reverse direction to move fluid and material from the barrel to a screen overflow assembly.

The invention relates to a pressure oil filter system for a hydraulic transmission, in particular for a motor vehicle transmission, comprising at least one oil pump which can be actuated as required and which has a pressure side and a suction side, a pressure line to a consumer and at least a first oil filter which is arranged at the pressure side of the oil pump in the pressure line, wherein means for damping pressure surges during intermittent operation of the oil pump are provided in the pressure line upstream of the first oil filter in the flow direction of the oil.

A filter arrangement for an aquarium is disclosed. The filter arrangement can include a filter housing assembly, a pump assembly, and a transfer tube assembly. In one aspect, the housing assembly and the pump assembly are separately constructed assemblies that are connected to each other via a first dampening member to prevent vibration and sound from being transmitted from the pump assembly to the filter housing assembly. The filter arrangement can further include a second dampening member connecting the pump assembly with the transfer tube assembly to further prevent vibration and sound from being transmitted from the pump assembly to the filter housing assembly. A third dampening member can be provided at a location where the transfer tube assembly is supported within the filter housing assembly to further isolate vibration and sound from being transmitted from the pump assembly to the filter housing assembly via the transfer tube assembly.