Distribution and shut-off device for hydraulic systems, particularly for domestic water systems

Claim 1

A distribution and shut-off device for hydraulic systems having a body which comprises: at least one main pipe section formed at each end so as to enable it to be coupled to the main pipe section of an identical device, to produce a continuous main pipe which is intended to be connected to a hydraulic network; at least one auxiliary pipe having an axis which is not coplanar with the axis of the main pipe section, and leading at its ends to two distribution outlets for connection to two user units; a passage which connects the main pipe section to the auxiliary pipe; two valves for shutting off the flow of fluid towards the two distribution outlets; wherein a first said shut-off valve is situated at the junction of the passage with the auxiliary pipe and is movable between an open position in which the two branches of the auxiliary pipe situated on the two sides of the valve communicate with each other and with the connecting passage, and a closed position in which the connection between the two branches of the auxiliary pipe is shut off and the passage only communicates with the branch of the auxiliary pipe leading to the outlet with which the second shut-off valve associated; a second main pipe section parallel to the first main pipe section, a second auxiliary pipe parallel to the first auxiliary pipe and provided with two further distribution outlets, a passage connecting the second pipe section to the second auxiliary pipe, and two further valves for shutting off the flow of fluid towards the two further distribution outlets, the further shut-off valves being formed and arranged identically to the two shut-off valves associated with the first auxiliary pipe; wherein the axes of the two auxiliary pipes are contained in a plane parallel to and spaced from the plane of the two main pipe sections, and axes of the auxiliary pipes are perpendicular to the axes of the main pipe sections; and the first shut-off valve having a valve member with a spherical body mounted in the body of the device for rotation about an axis perpendicular to the axis of the auxiliary pipe, and the valve member defining a first diametral hole which passes through the valve member in a direction perpendicular to the axis of rotation, a second hole which has an axis coincident with the axis of rotation and which extends from the first hole and opens facing the connecting passage, and a third hole which has an axis perpendicular both to the axis of the first hole and to the axis of the second hole and which extends from the first hole and opens on the external surface of the valve member.