Abstract: A ferrous metal housing 1 has an inlet 4 and an outlet 5 at opposite ends. A series of alloy discs 6 are carried on a shaft 7 within the housing, separated by spacers 8. The discs each contain a ring of circular apertures, and the shaft 7 is supported by skeletal spacers 9 and 10 to leave a gap between the periphery of the spacers and the wall of the housing. A ferrite magnet 14 of square outline is supported by the walls of the housing 1 at the outlet end, leaving four gaps between the sides of the magnet and the housing. The device is capable of maintaining high flow rates whilst producing a turbulence pattern which ensures good fuel conditioning.

Abstract: A housing containing a fuel flow path contains an alloy core formed in two halves. Each half core includes rectangular support walls 1, 2 and 3 arranged in a T configuration. A pair of wedge-shaped elements 4 and 5 extend from each of the two co-planar walls 1 and 2 parallel to the intermediate wall 3 to cause turbulence in the fuel flow. The core is formed from an alloy which comprises tin, antimony and a greater percentage of mercury than lead. A trace amount of platinum may also be included.