| 摘要 |
<p>The opposed centering element (21) is radially spaced (RA) from the inner surfaces of the filler pipe (24,1) to lie inside the end sector (6) of the pipe (1) at the infill opening (3). The centering element (15) presents a pipe (20) of circular section as against the opposing element (21), also circular in section so the two centering elements lie concentrically within one another when the cap (4) is placed on the filler pipe (1). The outside diameter (DA) of the first centering pipe (20) is smaller than the second pipe (23) diameter (D) and the centering element (15) comes in one piece along with the cap (4). The opposing element (21) thrusts off the inner pipe surface by means of a strut (25) at spacing (RA).</p> |
