(57) A container 8, e.g. an aerosol canister, is provided with a fluid flow regulator
which has a moveable element, e.g. a rubber sleeve 17 mounted on a mandrel 15 having
grooves 26, 27 along its surface, subject to the pressure within the container 8.
The flow regulator preferably has a flow restrictor, e.g. a capillary tube 18 upstream
of the moveable element. As the pressure within the container increases the moveable
element moves to restrict the flow of fluid through the flow regulator thereby giving
a non-linear flow rate/ pressure characteristic.
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