Abstract: A diaphragm pressure expansion vessel (1) which is intended to be connected to a line system having two vessel parts (2, 3) which are connected to one another in a pressure-tight and fluid-tight manner in a peripheral connecting region (4), wherein the closed vessel interior (10) which is formed by the two vessel parts (2, 3) is separated into a water chamber (6) and a gas chamber by a diaphragm (5), wherein the water chamber (6) can be connected to the line system via a connection piece (7), wherein the diaphragm (5) is formed from an at least single-layered plastic and is in the form of a bubble, should be developed further such that the risk of fracture of the plastic diaphragm when subjected to loading during replacement is considerably reduced.

Abstract: A diaphragm pressure expansion vessel (1) which is intended to be connected to a line system having two vessel parts (2, 3) which are connected to one another in a pressure-tight and fluid-tight manner in a peripheral connecting region (4), wherein the closed vessel interior (10) which is formed by the two vessel parts (2, 3) is separated into a water chamber (6) and a gas chamber by a diaphragm (5), wherein the water chamber (6) can be connected to the line system via a connection piece (7), wherein the diaphragm (5) is formed from an at least single-layered plastic and is in the form of a bubble, should be developed further such that the risk of fracture of the plastic diaphragm when subjected to loading during replacement is considerably reduced.