Abstract: A pipe connection in the form of a shrinkage connection formed from a connecting piece (1) having a surface structure (11), and a pipe (2) having an inner diameter which is smaller than the outer diameter of the connecting piece (1), wherein the surface structure (11) comprises a radially projecting flange (12) and at least one circumferential groove (13a, 13b, . . . ), the pipe (2) comprises a pipe end (21) which has been expanded in environmental temperature and connected to the connecting piece (1) by back-shrinkage. A sealing ring (3) is in the circumferential groove (13a, 13b, . . . ), which sealing ring (3) has an annular profile having an inner surface (31), being engageable with a connecting piece (1), and an outer surface (32), being engageable with the pipe (2), and the outer surface (32) comprises more than one annular ridge (33a, 33b, . . . ) adjacent to each other in axial direction.

Abstract: A valve comprises a housing and at least three ceramic discs in the housing such that at least two fixed ceramic discs are provided and at least one rotatable ceramic disc is provided between the fixed ceramic discs. The ceramic discs comprise through holes such that when the holes are aligned, the valve is open, and turning the rotatable ceramic disc turns the holes to be misaligned in successive ceramic discs, which prevents water flow through the valve. The valve further comprises a handle for rotating a rotatable ceramic disc and the handle comprises a stem extending through the housing, and a curved part, the curved part curving at least partly around the housing along the circumference of the housing.

Abstract: A valve comprises a housing and at least three ceramic discs in the housing such that at least two fixed ceramic discs are provided and at least one rotatable ceramic disc is provided between the fixed ceramic discs. The ceramic discs comprise through holes such that when the holes are aligned, the valve is open, and turning the rotatable ceramic disc turns the holes to be misaligned in successive ceramic discs, which prevents water flow through the valve. The valve further comprises a handle for rotating a rotatable ceramic disc and the handle comprises a stem extending through the housing, and a curved part, the curved part curving at least partly around the housing along the circumference of the housing.