Abstract: A pipe branching arrangement, in particular for a tank farm system, comprises an at least approximately vertically extending hollow body which has at least one lateral connector, further comprising at least one mixproof valve which sits on the connector and produces a closable connection between the hollow body and at least one pipeline. The valve has two closing members, between which there is a leakage space which has a leakage outlet opening, the leakage space having a circumferential wall which extends from an inlet on the connector side to the leakage outlet opening on the outlet side, which is at a distance from the inlet. The circumferential wall has a decline on the gravitational force side of the leakage space in direction to the leakage outlet opening.

Abstract: A double seat valve includes a flow barrier element arranged between first and second closing elements. The flow barrier element shadows a first sealing element and/or a first closing element seat of the first closing element which is in a closed position, when the second closing element is lifted and when a cleaning medium is applied to a leakage space, the flow barrier element preventing the cleaning medium from flowing directly against the first sealing element and/or the first closing element seat. The flow barrier element also shadows a second sealing element and/or a second closing element seat of the second closing element which is in a closed position, when the first closing element is lifted and when a cleaning medium is applied to the leakage space, the flow barrier element preventing the cleaning medium from flowing directly against the second sealing element and/or the second closing element seat.

Abstract: A double seat valve for separating media includes a valve housing which has connectors for a first pipeline and a second pipeline, a first closing element and a first closing element seat which is assigned to the latter, where the first closing element is in seal-forming abutment, in its closed position, with the first closing element seat via at least one sealing element, and a second closing element which is spaced apart axially from the first closing element, and a second closing element seat which is assigned to the second closing element, where the second closing element is, in its closed position, in seal-forming abutment with the second closing element seat via at least one sealing element, where the two closing elements can be lifted independently of one another from their respective closing element seat, and where a leakage space is provided between the two closing elements.

Abstract: A pipe branching arrangement, in particular for a tank farm system, comprises an at least approximately vertically extending hollow body which has at least one lateral connector, further comprising at least one mixproof valve which sits on the connector and produces a closable connection between the hollow body and at least one pipeline. The valve has two closing members, between which there is a leakage space which has a leakage outlet opening, the leakage space having a circumferential wall which extends from an inlet on the connector side to the leakage outlet opening on the outlet side, which is at a distance from the inlet. The circumferential wall has a decline on the gravitational force side of the leakage space in direction to the leakage outlet opening.