| 摘要 |
A valve includes a valve disc that partitions one chamber and another chamber. The valve disc includes annular bosses and seats. The boss is formed at each of the one chamber side and the other chamber side to support leaf valves. The seats are formed on outer peripheral sides of the respective bosses on the one chamber side and the other chamber side. The leaf valves are left from/seated on the seats. At least one of the seats on the one chamber side and the other chamber side are disposed to project with respect to the bosses. An outer peripheral end of the seat on the one chamber side is disposed on an outer peripheral side with respect to an outer peripheral end of the seat on the other chamber side. The valve disc includes an auxiliary seat. The auxiliary seat is formed on an outer peripheral side of the seat on the other chamber side. The auxiliary seat is disposed at a height identical to the seat on the other chamber side. Alternatively, the auxiliary seat projects with respect to the seat on the other chamber side. |
