| 摘要 |
The invention relates to a flow control device which is insertable into a fluid pipeline (K) and comprising a valve ( 1 ), an obturator with membrane ( 2 ), and anchoring flaps ( 3 ) that can deploy like umbrella spokes under the action of an elastic stress until it presses against the wall (P) of the pipeline (K). According to the invention, the membrane ( 2 ) and the flaps ( 3 ) are mutually attached to and disposed on a same side of the valve body ( 10 ), so that as the flaps ( 3 ) deploy the membrane ( 2 ) deploys at the same time until the membrane presses against the internal wall of the pipeline (K) and the fluid exerts on the deployed membrane a pressure which increases the pressure of the flaps ( 3 ) against this wall (P).
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