| 摘要 |
The invention relates to a multiway valve, comprising a first (101) and a second valve (102) integrally connected with each other. Each valve comprises a valve body (10, 200) comprising a user port, a source port (1011, 1021) and an intermediate chamber (18, 32) placed between the user port and the source port. A shutter (17, 30) is tightly housed inside the intermediate chamber of each valve and it has a passage orifice (20, 32) for a fluid to pass through the shutter itself. The multiway valve comprises movement means that allow the shufters of the first and second valves to be integrally moved between a closed position where each passage orifice of the shutters faces the inner walls of the respective intermediate chamber to an open position where the passage of the fluid between the user port and the source port is allowed through the passage orifice. The first valve comprises a bypass duct (110) formed in the shutter opening on the outer surface of the shutter and it is in fluid comniunication with the passage orifice. The bypass duct is such that even with the shutter in the closed condition, the intermediate chamber, the passage orifice, the duct, the source port and the user port of the first valve are in fluid communication. |
