Abstract: A compound water meter includes a housing having opposite inlet and outlet ends, a water guidance channel extending between the inlet and outlet ends and defining a direction of flow therebetween and upper opening disposed above and in communication with the water guidance channel, a main meter measuring inset disposed in the housing across the water guidance channel, a switch-over valve inset disposed in the housing across the water guidance channel and connected watertight with the main meter measuring inset, and an impeller rotatably supported directly by and between the respective insets such that the main meter measuring inset is disposed upstream and the switch-over valve inset downstream of the rotatable impeller relative to the direction of flow. Both insets form an inset unit and with the impeller are suspended in the housing by a cover which closes the upper opening of the housing. The main meter measuring inset has a hub rotatably supporting the impeller.

Abstract: A switch-over valve for a compound water meter includes an annular-shaped housing defining an annular valve seat and a central throughflow cross section, a pivot extending across the housing and supported at opposite ends in opposed portions of the housing, a closure member formed by a divided flap having a pair of wings disposed along opposite longitudinal sides of the pivot and articulated by the pivot for movement between opened and closed positions relative to the annular valve seat and the central throughflow cross section and a spring disposed about the pivot biasing the wings toward the closed position. The two wings of the divided flap are connected hinge-like one with the other along and via the pivot which extends along and in the region of division of the flap. The divided flap, due to its construction, has gaps along its region of division and along the pivot which are covered by a flat flexible seal disposed on an upstream side of the divided flap.