| 摘要 |
A check valve assembly is disclosed comprising an upper housing section having an inlet port, a first outer rim portion and a platform section adjacent the outer rim portion, and a lower housing section having an outlet port and a second outer rim portion, the second rim portion extending adjacent the first rim portion and abutting the platform portion when the upper and lower housing sections are melted together, the first rim portion maintaining the melted portions of the upper and lower housing sections within the housing, the upper and lower housing sections being configured to facilitate the melting process. The check valve assembly also comprises a valve seat, which is mounted between a seating ring on the upper housing section and a platform portion on the lower housing section, valve closure support means, and valve closure means for providing for the selective flow of fluid into the housing between the inlet port and the outlet port, the valve closure support means having a central post with tapered sides and a radiused base corresponding to a radiused section and tapered aperture in the valve seat, and a sealing ring to provide for sealing engagement between the valve seat and the valve closure support means.
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