Device for introducing substances into water

A device for introducing substances into water, comprising a housing forming a first chamber communicable with a water supply, a second chamber communicable with a consumer device, and a partition separating said first chamber from said second chamber and having an opening;

• connecting means including first communicating means which communicate said first chamber with a source of substance so that water supplied from the source of water through said first chamber flows into the source of substance, and second communicating means which communicate the source of substance with said second chamber so that a mixture of water and substance is supplied from the source of substance into said second chamber;
• a connecting flange for connecting said housing with the source of substance and arranged turnably relative to said housing, said turnable arrangement comprising at least one pin located on said flange, said pin engaging at least one groove located on said housing, each of said first and second communicating means including a throughgoing housing opening and a throughgoing flange opening which in an operative condition communicate and in inoperative condition do not communicate with each other;
• and sealing means for preventing leaks between said housing and said flange, said sealing means include two separate sealing members each provided in the region of one of said throughgoing housing openings and one of said throughgoing flange openings.