| 摘要 |
<p>A vented gas reservoir such as an inflatable boat comprises a gas reservoir and venting valve apparatus (10), having a main gas inlet (25) inside the reservoir and a main gas outlet (16) outside the reservoir communicating via a main flow path, a valve (26, 30) normally closing said main flow path and actuable to open said main flow path to vent gas from the reservoir, and a subsidiary gas inlet (38) inside the reservoir communicating with said main flow path upstream of the valve means, so constructed and arranged that passage of gas into the subsidiary inlet with the main flow path open produces or enhances gas flow out of the reservoir. A conduit is provided connecting said subsidiary inlet via a non-return valve to the exterior of the reservoir for the supply of gas thereto.</p> |
