Jacketed Type Chemical Reactor has the feature of ease of use and reaction flexibility. The Reactor has quick clamp that allow single hand vessel that changes in seconds. The Reactor has wide temperature range from -90 ° C to 250 ° C. The Reactor has wide pressure range of vacuum to 0.25 bar. The Reactor has leak free vessels and the spring loaded bottom outlet valve that eliminates leaks even at extremes of temperature and pressure. The Jacketed Type Chemical Reactor is robust and reliable.