| 摘要 |
This device can rotate and comprises an opening which is opposite the impulsion opening of a pump for the circulation of the liquid in one direction, which device adopts, through partial rotation, another position in which the impelled fluid circulates in the opposite direction. Said device is circular and has at least two openings, one of which is a free-passage opening and the other of which communicates with a tubular element which ends in a manifold with the corresponding apertures for the passage of the fluid. <IMAGE>
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