| 摘要 |
<p>A ball valve equipped with a ball closing component (1) a cover (18) and seals assemblies (2) having sediment rings (5) with seals (6) characterised in that on the lateral surface of each sediment ring (5) there is a flange (9), having from the side of a ball closing component (1), working surface (10). The space of the recess (3) of a body (4) contains a working chamber (11) placed between working surface (10) of the flange (9) and a closing ring (12) screwed down to the inner part of the body (4) and a chamber (13) placed from the back wall (8) of the recess (3). The working chamber (11) is connected in a passage way with the interior of the body (4).</p> |
