| 摘要 |
A check valve includes a body defining a flow bore therethrough, a slot, and a cavity extending from the flow bore and a flapper shoe retained in the slot. The check valve further includes a flapper operatively mounted to the flapper shoe such that, when closed, flow is inhibited through the flow bore and, when opened, the flapper is completely received in the cavity. A check valve assembly includes a valve body defining a flow bore therethrough; a flapper operatively mounted within the valve body such that, when closed, flow is inhibited through the flow bore and, when opened, flow is uninhibited through the flow bore; and a tailpiece attached to the valve body, the tailpiece defining a flow bore therethrough in fluid communication with the flow bore of the valve body and defining a cavity extending from its flow bore for completely receiving the flapper when opened.
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