A filter arrangement includes a first filter media construction having a burst disc arrangement that is triggerable to rupture and open a flow path through the media construction. The first filter media construction can be oriented within the interior volume of a second filter media construction.

A filter arrangement includes a first filter media construction having a burst disc arrangement that is triggerable to rupture and open a flow path through the media construction. The first filter media construction can be oriented within the interior volume of a second filter media construction.

A fluid circulation monitoring system includes a distributed processing system having a first processor located on-premises near a space filled with a circulating fluid and a second processor located off-premises. The first processor and the second processor are in communication with one another. A sensor is operatively connected to the first processor and senses at least one parameter associated with a flow rate of fluid through the circulation system. The distributed processing system is configured to process the at least one parameter and derive a volumetric fluid flow rate through a fluid pump which propels the fluid through the circulation system. Pattern recognition is applied to the at least one parameter to detect maintenance events and predict the need for maintenance events.

A method and apparatus for cleaning a fluid comprising a fluid supply port for receiving a contaminated fluid; a fluid return port for providing a cleaned fluid; an evaporator for evaporating liquid contaminants from the fluid; a fluid line connecting the evaporator between the fluid supply port and the fluid return port; a sensor connected to at least one of the fluid filter, the evaporator, and the fluid line; a controller connected to an output of the sensor, wherein the controller includes: a processor; and a memory device including computer readable instructions which, when executed by the processor cause the processor to perform the steps of: receiving data from the sensor; comparing the data from the sensor to reference data; sending a control signal to at least one of the fluid filter and the evaporator based on comparing the data from the sensor to the reference data.

A method and apparatus for cleaning a fluid comprising a fluid supply port for receiving a contaminated fluid; a fluid return port for providing a cleaned fluid; an evaporator for evaporating liquid contaminants from the fluid; a fluid line connecting the evaporator between the fluid supply port and the fluid return port; a sensor connected to at least one of the fluid filter, the evaporator, and the fluid line; a controller connected to an output of the sensor, wherein the controller includes: a processor; and a memory device including computer readable instructions which, when executed by the processor cause the processor to perform the steps of: receiving data from the sensor; comparing the data from the sensor to reference data; sending a control signal to at least one of the fluid filter and the evaporator based on comparing the data from the sensor to the reference data.

A method and apparatus for cleaning a fluid comprising a fluid supply port for receiving a contaminated fluid; a fluid return port for providing a cleaned fluid; an evaporator for evaporating liquid contaminants from the fluid; a fluid line connecting the evaporator between the fluid supply port and the fluid return port; a sensor connected to at least one of the fluid filter, the evaporator, and the fluid line; a controller connected to an output of the sensor, wherein the controller includes: a processor; and a memory device including computer readable instructions which, when executed by the processor cause the processor to perform the steps of: receiving data from the sensor; comparing the data from the sensor to reference data; sending a control signal to at least one of the fluid filter and the evaporator based on comparing the data from the sensor to the reference data.

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.

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.

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.

A water filter having a housing having a water inlet and a water outlet on a first end, and a pair of replaceable carbon elements contained within the housing, each carbon element having a water inlet near an outside diameter and a water outlet near the center, both the water outlet and water inlet being on a first end of each carbon element and each of the carbon element inlets being in fluid communication with the housing water inlet and each of the carbon element outlets being in fluid communication with the housing water outlet.