The present invention relates to a method for converting a full flow oil and/or fuel filter system into a bypass filter system comprising the use of a retro-fittable bypass filter configured to directly replace the pre-existing full flow filter, without the need for additional hoses or mounts etc. as in existing methods. Also described is a filter device for converting a full flow oil and/or fuel filter system into a bypass filter system comprising: an inlet for allowing fluid into the filter; a plurality of screens for filtering particles from the fluid; a cellulose element for filtering moisture from the fluid; an outlet for allowing fluid out of the filter; and a bypass for fluid to bypass the cellulose element and at least one screen and exit the filter, wherein the bypass filter is configured to directly replace the pre-existing full flow filter.

The present disclosure is generally related to the separation of liquids from solids and for the recovery of solids and/or liquids from slurries. In some embodiments, liquids are separated from solids by applying a reduced pressure. In some embodiments, slurries are flowed by applying a pressure gradient. In some embodiments, an apparatus is provided that comprises a channel, an inlet, an outlet, and one or more ports. One or more ports may be constructed and arranged to apply a pressure differential and/or a reduced pressure to the channel. Such systems and methods may, in some embodiments, facilitate continuous manufacturing of solid products.

A drain control device for a filter system for filtering a media flow of a first medium and a second medium, wherein the filter system has a collecting chamber collecting the second medium separated from the media flow and provided with a media outlet, has a sensor arrangement with at least a first sensor unit. The first sensor unit detects a filling level of the second medium in the collecting chamber. The first sensor unit has a first optical sensor. One or more shut-off valves are arranged at the media outlet. The first sensor unit is coupled with the one or more shut-off valves to automatically drain the second medium from the collecting chamber through the media outlet when a predetermined filling level of the second medium in the collecting chamber is reached. A filter system with such a drain control device is provided.

A drain control device for a filter system for filtering a media flow of a first medium and a second medium, wherein the second medium separated from the media flow collects in a collecting chamber of the filter system, has sensor arrangement with at least a first sensor unit and a second sensor unit. The first and second sensor units detect a filling level of the second medium in the collecting chamber. The first and second sensor units operate based on a different action mechanism, respectively. One or more shut-off valves are arranged at a media outlet of the collecting chamber. The first and second sensor units are operatively connected with the one or more shut-off valves to automatically drain the second medium from the collecting chamber through the media outlet when a drain criterion is reached. A filter system with such a drain control device is provided.

A method to determine at least one filter operating parameter. At least one transponder arranged on or in a filter cartridge of the filter is contactlessly queried by a reading device. A transponder response is analyzed to evaluate the operating parameter. The transponder is subject to influences acting on the filter cartridge. As a result of the influences that the transponder is sensitive to, or sensitivity on transparency or damping properties of a transmission path of electronic signals between the transponder and the reading device, a transponder response behavior is changed to a degree detectable by the reading device or a downstream analysis unit which enables a statement to be made about the operating parameter. A device for determining at least one operating parameter of a filter or a filter cartridge arranged on or in the filter, and a filter cartridge are both provided.

An apparatus and method for selecting and retaining solids in an activated sludge process for the improving wastewater treatment using screens. The screens can be used to separate and retain solids based on size or compressibility. The screens are used to separate and select for slow growing organisms, faster settling organisms, or materials added to absorb, treat or remove constituents in the activated sludge process.

An apparatus and method for selecting and retaining solids in an activated sludge process for the improving wastewater treatment using screens. The screens can be used to separate and retain solids based on size or compressibility. The screens are used to separate and select for slow growing organisms, faster settling organisms, or materials added to absorb, treat or remove constituents in the activated sludge process.

A fuel filter device includes a bag-shaped filter member filtering fuel that is drawn into a fuel pump, an inner frame member retaining the filter member in an expanded state, and a mounting member connected to the inner frame member and serving to communicate an internal space of the filter member with an outside. A valve chamber is defined by the inner frame member and the mounting member, and a check valve serving to prevent backflow of fuel is disposed in the valve chamber. The check valve includes a flat-plate shaped valve body having elasticity. The check valve opens against its weight when the fuel pump is operated, and the check valve closes due to its weight when the operation of the fuel pump is stopped.

An integrated fuel water separator filter system is provided. The fuel water separator filter may include a plurality of fuel water separator filters, with at least one fuel water separator filter including electronic sensors to monitor the life of the fuel water separator filter and the amount of water present in the fuel water separator filter. A heater heats the fuel in the fuel water separator filter.

A pipeline strainer having a body with a straining element therein. An air release valve may be disposed in the body so that any accumulated entrained gas may be vented. A baffle may be disposed downstream of the straining element and used to accumulate entrained gas in an eddy. The baffle may include or comprise a coalescing material. The pipeline strainer may have a Y-shaped body or may comprise a basket strainer.