| 摘要 |
<p>The hydro pneumatic pump has two identical independently sealed chambers covered by a lid. On the lid is hinged a circular valve with a float. This valve is operated by an automatic pneumatic distributor to give a constant flow of water. Each chamber has an air inlet valve and a water outlet at the base, with a non return valve. Each lid has a circular opening closed by a movable valve with a float to gravity close the chamber. This valve has a groove around it, to receive a sealing joint.</p> |
