FLOW RESTRICTION MEMBER

摘要

A flow restriction member (10) which is insertable into a fluid conduit (50) to restrict the flow of fluid through the conduit (50). The member (10) comprises a core (12) having a cross sectional area which is less than that of the conduit (50) and a rib (36) extending around the core (12) in a substantially helical manner. The height of the rib (36) is such that, in use, the rib (36) contacts the wall of the conduit (50) and defines a substantially helical fluid flow path between the core (12) and the wall of the conduit (50).