Closed Column Pressure Extractor (Comes with 1 yr. Limited warranty, excludes gaskets and screens) This system allows the user to build up solvent pressure by closing the valve, pulling a vacuum and filling the extractor, Extractor will fill about 85% with solvent before the internal pressure The solvent can will fit into either port with a tip adapter supplied with some butane cans, tip adapter required, not included Solvent Soak is expected to be between 30-90 min, but this all depends on material, starting with frozen cans of solvent is recommended This system allows the user to soak the material before opening the bottom valve to release the solvent and oil..syi