DoseCraft
VapeHeatLabClosed-Loop Extraction
A professional cannabis extraction system that recycles solvents in a sealed environment for safety and efficiency.
Closed-loop extraction is a professional cannabis extraction method where the solvent (typically butane, propane, or a blend) circulates within a sealed, pressurized system. Unlike open-blast methods where solvent escapes into the air, closed-loop systems recover and recycle the solvent, making the process dramatically safer and more efficient.
How It Works
In a closed-loop system, liquefied solvent flows from a storage tank through a column packed with cannabis material, dissolving cannabinoids and terpenes along the way. The solvent-extract mixture collects in a recovery vessel where gentle heat evaporates the solvent. The gaseous solvent then travels to a condenser that cools it back into liquid form, returning it to the storage tank for reuse. The entire system is sealed, preventing solvent vapor from reaching the environment. This cycle continues until extraction is complete.
Safety and Regulation
Closed-loop extraction is the industry standard in regulated cannabis markets. Licensed extraction facilities use certified, pressure-rated equipment with safety features including pressure relief valves, gas detectors, and explosion-proof electrical components. Many jurisdictions explicitly require closed-loop systems and prohibit open-blast extraction. For consumers, purchasing concentrates from licensed producers who use closed-loop systems ensures that the product was made in a controlled, safe environment with proper quality controls.