Abstract: A pipe fitting for conveying a medium, including an inlet at which the medium enters in a first direction perpendicular to an inlet cross section, and an outlet at which the medium leaves in a second direction perpendicular to an outlet cross section, wherein the two directions enclose an angle. The pipe fitting has three parts, wherein in each case two parts bearing against one another at a contact point, wherein in each case two parts at their contact point being rotatable relative to one another about the axis of the flow direction at the contact point in order to change the angle, and wherein the two contact points being spaced apart from one another in the flow direction.

Abstract: A pipe fitting for conveying a medium, including an inlet at which the medium enters in a first direction perpendicular to an inlet cross section, and an outlet at which the medium leaves in a second direction perpendicular to an outlet cross section, wherein the two directions enclose an angle. The pipe fitting has three parts, wherein in each case two parts bearing against one another at a contact point, wherein in each case two parts at their contact point being rotatable relative to one another about the axis of the flow direction at the contact point in order to change the angle, and wherein the two contact points being spaced apart from one another in the flow direction.

Abstract: The invention relates to a liquid supply system wherein liquid, such as for example, a supply of warm water, circulates. Said system consists of thick outer tubes, the inner chamber of said thick outer tubes allowing a liquid to flow through, a thin inner tube is respectively placed inside the outer tube in which the liquid can flow in the direction counter to that in the inner chamber. In the path of at least one outer tube, a first tube branch is introduced enabling the first inner tube to be withdrawn, and in said first branch, at least one functional component, such as a shut-off valve, is introduced into the inner tube and guided to a second tube branch in the path of an outer tube and extends further through said tube branch and then into the inner chamber of the latter outer tube.

Abstract: The invention relates to a liquid supply system wherein liquid, such as for example, a supply of warm water, circulates. Said system consists of thick outer tubes, the inner chamber of said thick outer tubes allowing a liquid to flow through, a thin inner tube is respectively placed inside the outer tube in which the liquid can flow in the direction counter to that in the inner chamber. In the path of at least one outer tube, a first tube branch is introduced enabling the first inner tube to be withdrawn, and in said first branch, at least one functional component, such as a shut-off valve, is introduced into the inner tube and guided to a second tube branch in the path of an outer tube and extends further through said tube branch and then into the inner chamber of the latter outer tube.

Abstract: A mixing device for hot and cold water having a mixing chamber formed in a circular--sector shaped cross section and having circumferentially spaced water inlet and an outlet. Within the camber is a circular-sector shaped mixing valve controlled in response to the mixed water temperature to thereby cover or open the inlets.

Abstract: A pipe connector for connecting at least three pipelines has a main pipe that is continuous in a direction of flow of water. A connection piece branches off from the main pipe, and an inner pipe follows both the main pipe and the connection piece. The inner pipe bears against the inner wall of main pipe and the connection piece such that the inner pipe is positioned on the extreme right portion or on the extreme left portion of the main pipe and the connection piece, with regard to the direction of the flow of water.

Abstract: A hot water supply system is provided, which includes a ring pipeline which extends through a water heater and in which water circulates, before going through tap pipelines to taps. The circulation pipelines have a substantially smaller cross-section than that of the tap pipelines. The circulation pipelines extend, for a portion thereof, in the interior of the tap pipelines before terminating openly in a region of a tap. A pipe branch piece is included, which is in the form of a continuous pipe and forms a component of the tap pipeline. A branch pipe of the pipe branch piece receives the circulation pipeline. The branch pipe forms an acute angle with the tap pipeline, with the angle being opened opposite to the flow direction in the tap pipeline. The section of the circulation pipeline, which extends to the tap, is inserted endways into the branch pipe, while the remaining section of the branch pipe joints at the branch pipe and at the ring pipeline.