Abstract: An arrangement includes a filter element for filtering a liquid, in particular hydraulic oil, and at least one charge absorption element for receiving electrically charged particles of the liquid. The filter element and the charge absorption element are electrically conductive, and the filter element has at least one filter layer with a filter layer surface. The filter layer surface and the charge absorption element can be passed through by the liquid and a charge separation takes place at the filter layer surface as the liquid flows through. The charge absorption element is electrically connected to the filter element such that during operation the charge separation is equalized between the charge absorption element and the filter layer surface. The charge absorption element is connected downstream of the filter element in the direction of flow. A filter device, a tank system and a method for charge equalization are also provided.

Abstract: The present invention relates to a valve block, for at least one valve, in particular a slip-in valve having at least one cavity for receiving the valve; a first opening for inlet of a fluid and a second opening for outlet of the fluid, wherein the openings open into the cavity; a mounting area in which the openings are provided; and a collar for securing the valve, which collar extends at least in sections around the cavity, wherein the collar integrally formed with the valve block by primary shaping, in particular injection molding or die casting.

Abstract: The invention relates to a filter device for filtering a hydraulic fluid comprising a housing having fluid through-openings for hydraulic fluid to be filtered to flow into the housing and for filtered hydraulic fluid to flow out of the housing, and having an assembly opening for inserting a filter element into the housing, the assembly opening being closable by a cover. In order to further develop the filter device such that it can be selectively configured in a cost-effective manner as a suction filter, return filter or return-suction filter, it is proposed in accordance with the invention that different filter elements be insertable into the housing, and that different functional modules be insertable into the housing or connectable to the housing.

Abstract: A filter device for filtering hydraulic liquid is provided, which has a housing having a housing upper part and a housing lower part. The housing upper part has a housing inlet and a housing outlet. A filter element is arranged in the housing lower part. The filter element has a dirty side in communication with the housing inlet and a clean side in communication with the housing outlet. The housing upper part comprises a convexly curved interior wall. An insertable flow-guiding element is arranged in the housing upper part which divides the housing upper part into a dirty region and a clean region. The dirty region is in communication with the dirty side of the filter element and the housing inlet opens into the dirty region. The clean region is in communication with the clean side of the filter element and the housing outlet leads out of the clean region.

Abstract: The invention relates to a filter device for filtering a hydraulic fluid comprising a housing having fluid through-openings for hydraulic fluid to be filtered to flow into the housing and for filtered hydraulic fluid to flow out of the housing, and having an assembly opening for inserting a filter element into the housing, the assembly opening being closable by a cover. In order to further develop the filter device such that it can be selectively configured in a cost-effective manner as suction filter, return filter or return-suction filter, it is proposed in accordance with the invention that different filter elements be insertable into the housing, and that different functional modules be insertable into the housing or connectable to the housing.