Patent ID: 7845028

Claim:
Vacuum sewer system comprising a source of sewage, sewer piping, a discharge valve between the source of sewage and the sewer piping, means for generating partial vacuum in the sewer piping, and a control means for controlling the operation of the discharge valve, the control means comprising a control mechanism with a body part defining a series of chambers including a first end chamber and a second end chamber, wherein the first end chamber is provided with an activating means, and the body part is provided with a first port for communication with a source of vacuum, a second port for communication with the discharge valve, a third port for communication with an aeration means, a first valve means, and a second valve means whereby the activating means is in connection with the first valve means provided with an engagement means, which engagement means is arranged for releasable engagement with the second valve means which is displaceable between a first position, providing communication between the second port and the third port, and a second position, closing the communication between the second port and the third port, wherein the vacuum sewer system further comprises a rinse water arrangement comprising a rinse water valve, wherein the control mechanism is arranged to control the operation of the rinse water valve through a fourth port in the body part of the control unit, and wherein the activating means is arranged to be pressed so that when it is pressed the first valve means with the engagement means is pushed forward so that the second valve means moves forward to its second position for creating a vacuum connection between the first port, the second port and the fourth port.