| 摘要 |
Method for monitoring the leaktightness of a flap valve consisting in closing the exit orifice of the seat 2 using a plug 6 in order to compress the volume of air naturally contained in the chamber 9 formed by the face 4a of the flap 4, the periphery of the orifice of the seat and the internal face 6a of the said plug, in applying the pressure resulting from this compression to a transducer 10 and in examining the signals delivered by the said transducer. <IMAGE>
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