| 摘要 |
<p>A system is provided for controlling flow of air and preventing flow of liqu id within vent lines connected to, for example, a pipe line or other like pipin g systems. The system has a first float in a first body and a second float in a second body. The first body has an open flanged top end, a flanged bottom end with an inlet therethrough and an interior wall defining an open interior. The second body also has an open flanged top end arranged to mate with said flanged bottom end of said first body, a bottom end, an interior wall defini ng an open interior and an inlet into the open interior. In an embodiment, the first body and th e second body are identical in size, shape and configuration. A cover is arranged to engage th e top end of the first body and it has an outlet formed therethrough. A first seat is secured at th e outlet in the cover to define an outlet for the first body. A second seat is secured at the inlet o f the first body to define an outlet for the second body. The floats are capable of moving into and out of engagement with their respective seats due to a level of liquid in the interior of the respective body.</p> |
