| 摘要 |
The controlled exhaust device comprises: an exhaust vent (36, 39) opening into an area for the pressurised distribution of liquid, and into a closed chamber (67) having an upper wall comprising an exhaust port (45) surrounded by an upper seat for a latching exhaust valve (46); and a latching exhaust valve comprising a weighing valve (46) mounted to slide between a high position and a low position in a latching exhaust valve guide comprising a guide conduit (52) having a lower end in communication with the exhaust vent (36), and an upper end coaxial to the upper seat of the latching exhaust valve. The latching exhaust valve is mounted in the guide conduit (52) with a clearance creating a sufficient loss of charge for the latching exhaust valve (46) to be repelled, in the same way as a piston, by liquid penetrating into the chamber (67) through the exhaust vent (36). |
