| 摘要 |
<p>A pipe coupling comprising an elastomeric bellows having annular end faces which, in use, abut corresponding annular flanges of the pipes being coupled, the bellows further including an internal wall defining a passageway for fluid flowing through the coupling, and an external wall forming an annular cavity around the passageway, each of the walls having at least one arch to allow for expansion and contraction of the bellows.</p> |
