Patent ID: 7891376

Claim:
A double seat valve for separating media, comprising: a valve housing having connectors for a first pipeline and a second pipeline; a first closing element and a first closing element seat, said first closing element being in seal-forming abutment, in a closed position of said first closing element, with said first closing element seat via at least one first sealing element; a second closing element spaced apart axially from said first closing element and a second closing element seat, said second closing element being, in a closed position of said second closing element, in seal-forming abutment with said second closing element seat via at least one second sealing element; wherein said first and second closing elements can be lifted independently of one another from said respective first and second closing element seats; a leakage space being provided between said first and second closing elements; a flow barrier element arranged between said first and second closing elements; wherein said flow barrier element shadows at least one of said at least one first sealing element and said first closing element seat of said first closing element which is in said closed position, when said second closing element is lifted and when cleaning medium is applied to said leakage space, said flow barrier element preventing said cleaning medium which enters said leakage space from flowing directly against said at least one of said first sealing element and said first closing element seat of said first closing element; and wherein said flow barrier element shadows at least one of said at least one second sealing element and said second closing element seat of said second closing element which is in said closed position, when said first closing element is lifted and when cleaning medium is applied to said leakage space, said flow barrier element preventing said cleaning medium which enters said leakage space from flowing directly against said at least one of said second sealing element and said second closing element seat of said second closing element.