VARIABLE ORIFICE DEVICE

摘要

The present invention regards a valve device (1) for use in a well bore, where the valve device (1) comprises an outer hollow housing (2) with at least one inlet (3) and one outlet, the at least one inlet and one outlet being connected with an internal passage, forming a flow passage, an orifice (12) being arranged in connection with the flow passage. According to the invention the valve device (1) further comprises a pressure sensitive device comprising a bellows (6) and being connected to a regulating element (15), where the bellows (6) being exposed to an external pressure from a fluid will control a movement of the regulating element (15) relative the orifice (12), in order to vary a cross section of flow of the orifice (12).