A filter device includes a functional element and a filter element arranged in a filter housing. The filter element includes an enclosure positioned about a central axis and below filter material of the filter element. The enclosure includes an enclosure wall that defines an inner volume that is in fluid communication with an orifice of the functional element when the filter element is positioned over the functional element.

An object of the present invention is to provide a chemical liquid purification method which makes it possible to obtain a chemical liquid having excellent defect inhibition performance. Another object of the present invention is to provide a chemical liquid. The chemical liquid purification method according to an embodiment of the present invention is a chemical liquid purification method including obtaining a chemical liquid by purifying a substance to be purified containing an organic solvent, in which a content of the stabilizer in the substance to be purified with respect to the total mass of the substance to be purified is equal to or greater than 0.1 mass ppm and less than 100 mass ppm.

An object of the present invention is to provide a chemical liquid purification method which makes it possible to obtain a chemical liquid having excellent defect inhibition performance. Another object of the present invention is to provide a chemical liquid. The chemical liquid purification method according to an embodiment of the present invention is a chemical liquid purification method including obtaining a chemical liquid by purifying a substance to be purified containing an organic solvent, in which a content of the stabilizer in the substance to be purified with respect to the total mass of the substance to be purified is equal to or greater than 0.1 mass ppm and less than 100 mass ppm.

A foreign matter collecting device provided at a ship propulsion device that is configured to apply a propulsive force to a ship, the foreign matter collecting device includes an anti-ventilation plate extending in a horizontal direction and a collecting part provided in the anti-ventilation plate. A flow path extending from a water intake port to a water discharge port is provided in the anti-ventilation plate. A filter configured to collect fine-grained foreign matters from a water flow in the flow path is provided in the collecting part.

A foreign matter collecting device provided at a ship propulsion device that is configured to apply a propulsive force to a ship, the foreign matter collecting device includes an anti-ventilation plate extending in a horizontal direction and a collecting part provided in the anti-ventilation plate. A flow path extending from a water intake port to a water discharge port is provided in the anti-ventilation plate. A filter configured to collect fine-grained foreign matters from a water flow in the flow path is provided in the collecting part.

A system and method for removing a coating from an excavated pipe section includes impacting liquid jects against the coating and collecting a mixture of the liquid and debris of the removed coating. The mixture is subjected to active separation and passive separation to capture the debris, wherein the debris can be appropriately disposed.

A system and method for removing a coating from an excavated pipe section includes impacting liquid jects against the coating and collecting a mixture of the liquid and debris of the removed coating. The mixture is subjected to active separation and passive separation to capture the debris, wherein the debris can be appropriately disposed.

Contaminants are removed from a liquid (12) in a storage vessel (14), by using a working liquid to varying the volume of a working cavity (44) sequentially inside a working vessel (16) and using the variations in the volume of the working cavity (44) to vary the volume of a suction cavity (20). The working cavity (44) is defined in a working vessel (18) and the suction cavity (20) is defined in a suction vessel (26) and the vessels (16, 18) are configured so that the volumes of their internal cavities (20, 44) are inter-dependent. Using non-return mechanisms (26, 36) to ensure one-way from the storage vessel (14) via the suction cavity (20) to a filter (28) and back to the storage vessel (14).

Contaminants are removed from a liquid (12) in a storage vessel (14), by using a working liquid to varying the volume of a working cavity (44) sequentially inside a working vessel (16) and using the variations in the volume of the working cavity (44) to vary the volume of a suction cavity (20). The working cavity (44) is defined in a working vessel (18) and the suction cavity (20) is defined in a suction vessel (26) and the vessels (16, 18) are configured so that the volumes of their internal cavities (20, 44) are inter-dependent. Using non-return mechanisms (26, 36) to ensure one-way from the storage vessel (14) via the suction cavity (20) to a filter (28) and back to the storage vessel (14).

A filter cartridge for a water dispenser includes a connection portion having a base connected to a filter portion for filtering water to be supplied to the water dispenser, a fluid connection extending upward from the base, and one or more locking wings connected to the base and extending outward on opposite sides of the base. The fluid connection is configured to be in fluid communication with the filter portion and configured to permit passage of the water into and/or out of the filter portion. Each locking wing has a lip extending outwardly such that a space is defined between an underside of the lip and an upper side of the base, and each locking wing is configured to engage a flange on a filter head and to receive the flange in the space to lock the filter cartridge in connection with the filter head.