Abstract: The invention relates to a disk valve for corrosive fluids comprising a tubular metal housing lined with a hard-elastic, unpadded coating and a throttle disk with a hard-sealing, unpadded covering being made up of hard synthetic resin and being of a minimum thickness of three millimeters. The throttle disk is attached to two pivot pins extending through said coating and said metal housing and the throttle disk is sealing said metal housing in a transverse plane comprising the axis of said pivot pins. The pivot pins are directly enclosed by separate, hard-elastic sealing bushes seating on the covered throttle disk and being separately adjustable. In order to provide a disk valve which can be applied for a large temperature range and which has no leakages at the sealing bushes as well, the sealing bushes are respectively pressed with wedge-shaped front ends into V-shaped annular grooves of the disk covering.