Abstract: A filter system for fluid has a housing with first and second fluid connectors and first and second housing parts sequentially arranged along a longitudinal axis and connected to each other. A filter element with a filter medium body and a central pipe arranged inside is arranged in the housing. The second housing part has a connector socket connected to the second fluid connector. The filter element has first and second end discs at axially opposed end faces. The central pipe adjoins a central opening of the second end disc. A positioning element is axially slidable inside the central pipe. With the filter element mounted as intended, the second end disc is arranged at the connector socket of the second housing part. The filter element is rotationally aligned by the positioning element interacting with a counter element of the connector socket. A filter element for the filter system is provided.

Abstract: A pressure equalization device for a housing has a base body and a closure element with a flow path between them being open in a normal operating state of the pressure equalization device. A flow opening in the flow path is spanned by a membrane. An emergency venting spike projects from the closure element toward the membrane. The pressure equalization device transitions after emergency venting into an emergency operating state in which the closure element gas-tightly closes the base body. A housing with such a pressure equalization device is provided. In a method for pressure equalization with such a pressure equalization device between a housing interior and an environment, gas exchange between interior and environment is performed through the membrane and the flow path between closure element and base body. During emergency venting, the membrane is destroyed by the emergency venting spike. The closure element then closes the base body.

Abstract: A venting and separating device for a housing of a battery includes a base body including a circumferentially extending rim configured to couple to the housing, an inlet opening configured to be in fluid communication to an interior of the housing, an outlet opening configured to be in fluid communication with an environment, a first separation screen including first screen openings engaging across the inlet opening, and a second separation screen in a venting flow direction fluidically downstream of the first separation screen, the second separation screen including second screen openings engaging across the outlet opening. The base body further includes a pressure relief valve configured to open, when a predetermined excess pressure in the housing is surpassed, a bypass fluid flow path from the interior of the housing to the environment, the bypass fluid flow path bypassing both the first separation screen and the second separation screen.

Abstract: A filter element, in particular an air filter element, has a filter media body surrounding a hollow interior and has a first end and an opposite second end. A first end cap is positioned on the first end of the filter media body, and a second end cap is positioned on the second end of the filter media body. The second end cap is a closed end cap. The second end cap has a plurality of spaced-apart inner adapter projections arranged thereon and projecting in direction of a central axis away from the first end cap. At least some of the inner adapter projections are positioned in a circular arrangement so as to surround a center of the second end cap. Such a filter element is arranged in a housing of a filter system provided with a receiver arrangement for the filter element.

Abstract: A pressure equalization device for a housing has a base body and a closure element with a flow path between them being open in a normal operating state of the pressure equalization device. A flow opening in the flow path is spanned by a membrane. An emergency venting spike projects from the closure element toward the membrane. The pressure equalization device transitions after emergency venting into an emergency operating state in which the closure element gas-tightly closes the base body. A housing with such a pressure equalization device is provided. In a method for pressure equalization with such a pressure equalization device between a housing interior and an environment, gas exchange between interior and environment is performed through the membrane and the flow path between closure element and base body. During emergency venting, the membrane is destroyed by the emergency venting spike. The closure element then closes the base body.

Abstract: A filter device includes a lid (6) configured for detachable mounting to a filter housing, an annular filter element (2) mounted to the lid (6), a closure part (13) embodied as a separate component from the filter element and the lid (6) with the closure part (13) detachably secured to at least one of the lid (6) and the filter element (2).

Abstract: A filter device includes a lid (6) configured for detachable mounting to a filter housing, an annular filter element (2) mounted to the lid (6), a closure part (13) embodied as a separate component from the filter element and the lid (6) with the closure part (13) detachably secured to at least one of the lid (6) and the filter element (2).