Fantini Cosmi FF82 flow switch for refrigeration/heating systemsFantini Cosmi FF82 flow switch for refrigeration heating systems The Fantini Cosmi FF82 flow switch controls the flow of liquids in pipes for refrigeration and heating systems (DM 1 12 1975 safety regulations for appliances containing hot liquids under pressure and collection R file R. 2. C. 6.). The operating principle provides that a flexible paddle, stressed by the flow, acts on the operating lever of a microswitch in SPDT switching. In heating