This disclosure generally relates to perforated filter media and coalescing filter elements utilizing perforated filter media. One example coalescing filter element is structured to separate a dispersed phase from a continuous phase of a mixture. The filter media includes a first coalescing layer. The first coalescing layer includes a first filter media. The first filter media has a plurality of pores and a first perforation. Each of the plurality of pores is smaller than the first perforation. The first perforation is formed in the first filter media and extends through the first filter media. The plurality of pores are structured to capture a portion of the dispersed phase. The first perforation is structured to facilitate the transmission of coalesced drops of the dispersed phase through the first coalescing layer such that the coalesced drops of the dispersed phase are separated from the portion of the dispersed phase captured in the first coalescing layer.

A sanitizing filter for sanitizing a residential water filtering system has a water filter assembly including a cartridge operable for removable attachment to the water filter assembly. When the cartridge is attached to the water filter assembly, a water flow passes into the cartridge, mixes with sanitizing media within the cartridge, and passes back into the water filter assembly. The residential water filtering system is then filled and flushed repeatedly and the mixture of water and sanitizing media sanitizes the portions of the system that are downstream from the sanitizing filter.

A filter apparatus includes a filter unit and a conveying unit. The filter unit is configured to filter a liquid to-be-filtered, and the liquid to-be-filtered enters the filter unit in a first tangent-line direction of the filter unit. The conveying unit extracts a liquid to-be-conveyed from a periphery of the filter unit to output a conveyed liquid, and the conveyed liquid enters the filter unit in a second tangent-line direction of the filter unit.

A platform has a filter system with a first set of filter modules and a second set of filter modules that is different from the first set of filter modules. Each set of filter modules includes an inflow channel and an outflow channel. A fluid inlet is connected to the first set of filter modules, a fluid outlet is connected to the second set of filter modules, and a separation interface separates the first and second sets of filter modules. The separation interface has a first interface channel to connect to the module outflow channel of the first set of filter modules, and a second interface channel to connect to the module inflow channel of the second set of filter modules. The filter system receives fluid through the fluid inlet and, after the fluid has passed through each set of filter modules, discharges the fluid through the fluid outlet.

A sanitizing filter for sanitizing a residential water filtering system has a water filter assembly including a cartridge operable for removable attachment to the water filter assembly. When the cartridge is attached to the water filter assembly, a water flow passes into the cartridge, mixes with sanitizing media within the cartridge, and passes back into the water filter assembly. The residential water filtering system is then filled and flushed repeatedly and the mixture of water and sanitizing media sanitizes the portions of the system that are downstream from the sanitizing filter.

A fluid-flow contaminant indicator includes a container having a fluid-flow path having an upstream region and a downstream region. A colorimetric indicator, disposed in the fluid-flow path, has a surface adapted to change color when exposed to a contaminant of interest. The colorimetric indicator has at least one hole passing there through such that the fluid-flow path extends through the hole(s) in the colorimetric indicator. A fluid-impervious mask is adhered to all of the colorimetric indicator's surface except for a region of the surface that is adjacent to the hole(s) in the colorimetric indicator wherein this region is exposed to the upstream region of the fluid-flow path.

A cleaner casing is fitted to a fan casing for covering an air cooling fan for an engine. A cleaner chamber is formed between the fan casing and the cleaner casing. The cleaner chamber accommodates therein a cylindrical filter element. The filter element purifies air which will becomes an intake air for the engine. In an outer periphery of the cleaner chamber, a swirling passage is formed. An air outside the fan casing is captured into the switching passage through a suction opening. The swirling passage allows the air to be passed onto a hollow portion of the filter element after the air has been swirled around the filter element thereby.

Support and drainage materials, filter including the materials, and methods of use are disclosed.

A filter for use in filtering a fluid slurry that includes particles of varying size, such as pool water including debris, is provided. The filter is in electrical communication with a sensor and includes a housing having an inlet to receive the fluid slurry, an outlet, and an internal chamber. An actuator can be coupled to the filter media to move at least a portion of the filter media to vary a dimension of the pores. The filter also includes a controller connected to the actuator that is capable of receiving a signal from the sensor and controls the actuator to change the dimension of the pores based on the signal.

Support and drainage materials, filter including the materials, and methods of use are disclosed.