Distillation equipment and systems; molecular and/or short path and/or thin film distillation and evaporation equipment for food, beverage, pharmaceutical, nutraceutical, chemical and petrochemical processing, aroma recovery, deodorising, alcohol removal, solvent removal, extraction, reaction, the production of extracts, slurries, concentrates, powders and/or flavours; evaporation equipment and systems; parts and fittings for the aforementioned