Quick connector is certified non-toxic food-grade material manufacturing. Health and safety. Widely used in pure water, water, food and drink series parts. Usable: the quick connector to use faster, more convenient, more secure, it will gradually replace the current market ordinary plastic and nylon fittings. Unique design: unique within the grasp of the design on the basis of practice and drawn, to ensure that never leaks. Valve Swicth Quick Connection RO Water Aquarium Osmosis System