A filter filters a flow of liquid and has a pressure vessel, a filter assembly deployed within the pressure vessel, and a backwash assembly. The pressure vessel has an inlet, an outlet, and a flow path in fluid communication with the outlet. The filter assembly has at least one filter unit and at least one support configuration that supports the at least one filter element. The at least one filter element has first and second coarse mesh material support layer that have apertures of a first and second size, respectively, and a cloth filter layer that has apertures of a third size smaller than the first and second sizes. The cloth filter layer is interposed between the first and second coarse mesh material support layers. The backwash assembly has a suction nozzle in facing relation to a first or second surface of the filter unit.

A filter filters a flow of liquid and has a pressure vessel, a filter assembly deployed within the pressure vessel, and a backwash assembly. The pressure vessel has an inlet, an outlet, and a flow path in fluid communication with the outlet. The filter assembly has at least one filter unit and at least one support configuration that supports the at least one filter element. The at least one filter element has first and second coarse mesh material support layer that have apertures of a first and second size, respectively, and a cloth filter layer that has apertures of a third size smaller than the first and second sizes. The cloth filter layer is interposed between the first and second coarse mesh material support layers. The backwash assembly has a suction nozzle in facing relation to a first or second surface of the filter unit.

A disposable oil filter containment sheath is provided for use during oil changes for combustion engines. The sheath has a closed bottom, a cylindrical sidewall, and an open top. The resilient sheath is rolled to an initial collapsed position for placement on the bottom of an oil filter mounted on the engine, and it is partially unrolled along the filter. The filter can then be loosened to allow oil to drain into the sheath for capturing a reservoir. After the filter is removed from the engine, the sheath is completely unrolled and tied at the top so as to fully enclose and contain the oil filter and oil. The sheath and its contents are then ready for disposal.

A water treatment insert for a pool skimmer system includes a chemical treatment portion separated from a mechanical filtration portion. The treatment device includes an upper portion and a lower portion. The upper section can include a vertical wall or walls, which should be substantially watertight so that substantially all the water entering the pool skimmer flows through the upper portion, and then into the lower section. The entire device is preferably received in the filter basket receiving section of a conventional pool skimmer, in place of the conventional filter basket. One of the upper and lower sections provides mechanical filtration and the other chemical treatment, to enhance the water treatment function of the skimmer.

A water treatment insert for a pool skimmer system includes a chemical treatment portion separated from a mechanical filtration portion. The treatment device includes an upper portion and a lower portion. The upper section can include a vertical wall or walls, which should be substantially watertight so that substantially all the water entering the pool skimmer flows through the upper portion, and then into the lower section. The entire device is preferably received in the filter basket receiving section of a conventional pool skimmer, in place of the conventional filter basket. One of the upper and lower sections provides mechanical filtration and the other chemical treatment, to enhance the water treatment function of the skimmer.

The present invention relates to a melt-joined filter element with improved testability after dry steaming or alternatively after sterilization by irradiation, to a method for producing the filter element according to the invention, and to the use of the filter element for filtering solutions.

The present invention relates to a melt-joined filter element with improved testability after dry steaming or alternatively after sterilization by irradiation, to a method for producing the filter element according to the invention, and to the use of the filter element for filtering solutions.

An irrigation filter system and method is provided. The system may have a body and a filtration subsystem and may separate fluid from detritus carried by the fluid. The fluid may be released onto a crop, while the detritus is collected by the filtration subsystem. A drain fixture may be operated to release the detritus from the irrigation filter system in response to at least one of the pressure of the fluid flowing in the system and gravity. In this manner, the detritus may be released without requiring the system to be shut down and/or disassembled.

An air filter (1) comprises an air filter media (10) with a sorbent-free area (20) that provides a visual filter life indicator zone (30) and with a sorbent-loaded area (26) that provides a visual reference zone (27).

An air filter (1) comprises an air filter media (10) with a sorbent-free area (20) that provides a visual filter life indicator zone (30) and with a sorbent-loaded area (26) that provides a visual reference zone (27).