| 摘要 |
The subject of the present invention is a compressed air device functioning intermittently for pumping slurries. It is characterised by the fact that it comprises at least one ferrule 1 and at least one delivery tube 2, a flap valve 5, a tube 3 for compressed air, the said tube being fitted with a valve and a device for controlling the said valve. Applications to the pumping of high-density slurries. <IMAGE>
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