Abstract: A method and a device for, preferably in ATM-traffic and in a switch with input and output buffers and with a so-called “credit based solution” for flow control, using a very short time interval between the requests from the input ports to send cells through the switch core to the output ports and where the degree of fullness of the output buffers is accurately supervised and taken into the calculations together with the number of cells in the input buffers when determined how many cells should be allowed to be sent to each output port during the next time interval. A certain over-allocation of cells to each output port is permitted.

Abstract: An inlet portion of a valve, comprising a tube element having at least one connecting piece which forms the connection of a connecting tube which in turn is connected to a water supply net. The connecting piece is provided with a tube part being coaxially arranged to the connecting tube, which tube part extends partly into the tube channel of the connecting tube. The tube part has such dimensions that a slit space is maintained between the tube part and the channel wall of the connecting tube.