| 摘要 |
PROBLEM TO BE SOLVED: To provide a multifunctional valve device and a pump facility, capable of attaining reduction in material cost and installation cost, improvement in workability and work quality, and reduction in maintenance cost and repair work cost by securement of an effective space.SOLUTION: An inflow path 3 has an inflow port 3 upstream. An outflow path 5 has an outflow port 5 downstream, and communicates with the inflow port 3. A valve seat 7 is provided downstream of the inflow port 3. A check valve 1 is movably provided between an evacuation path 6 and the valve seat 7, and constitutes a counterflow from the outflow port 5 to each inflow port 3 together with each valve seat 7. On the occurrence of an unanticipated situation such as intrusion of foreign matter to a multifunctional valve device, a water stopping bolt 11 is rotated, whereby the check valve 1 can be moved toward the inflow port 3 to close the inflow port 3. |
