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 filtered water supply extension system including an extension member and a flow control device, and a method for extending a filtered water supply of a primary appliance, for example, a refrigerator, to an external appliance, for example, a coffee maker, are provided. The extension member draws and directs an additional flow of filtered water from a water filter of the primary appliance to the external appliance, without interrupting a regular flow of filtered water from the water filter to one or more internal appliances, for example, an ice maker, a water dispenser, etc., of the primary appliance. The flow control device connects the extension member to the external appliance and controls the additional flow of filtered water to the external appliance. A microcontroller, in communication with a control panel, controls a valve assembly for directing a measured quantity of filtered water from the water filter to the external appliance.

Disclosed herein is a waste oil purification apparatus that purifies waste lubricating oil and waste oil at high speed by a precipitation induction method in a vacuum state and further completely removes metallic foreign materials, thereby improving the efficiency of the purification of waste oil. The waste oil purification apparatus may include a purifier configured to purify waste oil such as waste lubricating oil or general waste oil by a filtering method, and a separator configured to separate and remove foreign materials contained in the waste oil purified by the purifier.

Some embodiments of the present application disclose a polishing liquid supply system. In the present application, the polishing liquid supply system includes: a polishing liquid preparation device, a cleaning liquid supply device and a filtering device, and further includes a supply pipeline connected with the polishing liquid preparation device and the filtering device and a cleaning pipeline connected with the cleaning liquid supply device and the filtering device. The polishing liquid preparation device is configured to prepare a polishing liquid and convey the prepared polishing liquid to the filtering device through the supply pipeline. The filtering device is configured to filter the polishing liquid and convey the filtered polishing liquid to a polishing device connected with the filtering device. The cleaning liquid supply device is configured to convey a cleaning liquid to the filtering device through the cleaning pipeline.

A removable filter cartridge includes a filter housing containing a filter for filtering liquid and a sealing valve assembly coupled to the filter housing and for removably coupling the filter cartridge to a filter head. The sealing valve assembly include an inlet passageway and an outlet passageway. The sealing valve also including an inlet sealing valve that blocks the inlet passageway and an outlet sealing valve that blocks the outlet passageway while the filter cartridge is uncoupled from the filter head. A method of retrofitting a filter housing includes removing the filter housing from a filter head, coupling a sealing valve assembly to the removable filter to form a removable filter cartridge, and coupling the removable filter cartridge to the filter head.

A liquid filter arrangement is provided, as well as methods of assembly and use. Advantageous features, relating to a preferred filter cartridge and a preferred slide arrangement, are provided.

An apparatus for filtering water has an interface and a filtration/purification canister removably mountable thereon. Connecting the canister to the interface automatically opens a check valve in the interface to permit water to flow from the interface into and through the canister, and then back to and through the interface to an outlet port. Disconnecting the canister from the interface automatically closes the check valve, stopping the flow of water. An end cap may be substituted for the canister to permit fluid to flow through the interface when the canister is not mounted on the interface. The outlet port may be directly connected to an appliance that uses water, to eliminate possible contamination that may occur when water is brought indirectly form the outlet port to the appliance instead. A flapper valve is provided in the canister to prevent back flow of fluid from the inlet port of the canister when the canister is not mounted on the interface. The flapper valve also is provided with an actuating means to automatically open the flapper valve when the canister is mounted on the interface, which permits fluid to be drained from the canister when the fluid distribution system is being drained without disconnecting the canister from the interface.