The present invention relates to an underwater seal pressure controlled double chamber pleural cavity drainage system. More particularly the present invention relates to operation of bottle with pressure-controlled valve for safety of the patient for extraction of discharge fluid and gas at controlled and acceptable flow rate. Further this "invention also relates to device.fitted for facilitating the shifting of patient during recuperating. Present invention also relates to an underwater seal pressure controlled double chamber pleural cavity drainage system to a user friendly, safe, economical, operatable in all the prevailing atmospheric condition and its availability.
