Inner fittings and baskets

In order to reduce the time needed for charging and discharging it is advisable to equip the extraction vessel with one or more baskets standing on top of each other. The sealing of the gap between basket and inner wall of the vessel must be carried out very carefully. Bypass flows around the baskets could reduce the efficiency of extraction. Normally, solvent flow is from the bottom to the top. It is recommended therefore that the top insert should be held down by contact pressure from the upper cover of the vessel. The cylindrical baskets 

When using this technique, care is required to ensure that the height of the bed of solid material does not decrease during extraction to such an extent as to allow the radial solvent flow to bypass the bed. Bed shrinkage does occur in some cases because of structural changes produced in the solid by the extraction process. In the case of radial flow this would result in an unrestricted flow of solvent above the solid material. 

Gasket rings are available in different geometries oval, triangular, rhombic, planar or honeycomb structured. The application of a special sealing material 

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