| 摘要 |
A flexible resilient valve disc is mounted in a valve body and is biased by its own resilience against an annular valve seat surrounding an inlet cavity in an inlet body member. The valve disc is adapted to be deflected away from the valve seat into an outlet chamber and an outlet body member. Mating pin and socket formations are formed axially on the body member. The valve disc has a central mounting hole which is received with an interference fit on the pin formation. Initially, the disc is flat, but is deflected into a cupped shape by engagement with the valve seat, when the valve members are assembled and bonded together. The inlet and outlet body members have inlet and outlet connections with inlet and outlet passages therein. The inlet and outlet connections are offset in a radially outward direction from the central axis of the valve. This offset construction simplifies the molding of the body members and makes it easier for the valve disc to crack open due to surges of differential pressure between the inlet and outlet passages. Stop pins are provided on the outlet member to prevent the valve disc from obstructing the outlet passage. The inlet and outlet connections are aligned with each other and merge smoothly with the body members to provide a short flow path and to avoid turbulence in the fluid flow.
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