Air supply system for therapeutic pool

摘要

An air supply system for a therapeutic pool which allows placement of the air blower at a level below the water surface without danger of damage by water backflow. A check valve prevents gross water backflow to the blower, and a float valve between the check valve and the blower automatically drains any leakage of water through the check valve. The float valve is placed between the check valve and the blower in a manner so as to receive all leakage.