assembly 19 can also support the separator assembly 14 the extraction assembly 12 comprises a tubular hollow extraction vessel 20 from having an open top 22 and an open bottom 24 a peripheral flange 23 extends outwardly from the open top 22 a similar peripheral flange 25 extends outwardly from the open bottom 24 a top cup 26 normally detachably engages with the open top 22 the top cup has an open bottom 28 that matches the size and configuration of the top open end 22 of the extraction vessel 20 the top cup 26 is provided with a peripheral flange 27 that matches the top peripheral flange 23 of the extraction vessel 20 a two piece top clamp member 30 having clamp members 30 a and 30 b secures the peripheral flanges 23 and 27 with the help of bolt 31 and nut washer assembly 33 a perforated gasket 36 is sandwiched between the bottom of the top cup 26 and the top open end 22 of the extraction vessel 20 the perforated gasket 36 allows the gas to atomize before saturating the biomass or plant material in the extraction vessel 20 the gasket 36 also prevents the biomass from moving upwardly into.