| 摘要 |
The invention relates to a device for delivering a liquid, which device comprises a pump, and an anti-siphon valve external to the pump and having an inlet channel connected to the outlet duct of the pump, and an outlet channel, between which channels a seat and a moving member are disposed that are suitable for co-operating together and that define, between the inlet channel and the outlet channel, a leaktight liquid flow zone, said moving member being suitable for going from an opening position making it possible for liquid to flow through said flow zone, to a closure position in which the moving member comes into contact with the seat of the valve and prevents any flow through said flow zone, said moving member being subjected to the pressure of a reference chamber that is not in fluid communication with the outlet channel. Application to obtaining a pump for injecting liquid medication.
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