| 摘要 |
<p>Check valve apparatus for the control of fluid flow using a flexible disc (400) positioned in a control channel (210) of a body member (200) restricted to movement along the longitudinal axis by guide surfaces (201). Closure control is exercised by moving the disc (400) into closer contact with a ring seat (221) that is essentially self-purging of debris. Since the disc (400) is confined to essentially longitudinal movement, distortion due to random lateral movement is avoided.</p> |
