US Patent 11175068 Air conditioning drain line system

An air conditioning drain line system is disclosed where the drain line includes an access connector pipe for inserting a chemical delivery strand of material into the drain pipes. The connector pipe may be a Y-shaped connector pipe and retain the strand. The strand may extend into the drain pipes and around an elbow in the pipes. The elbow may be designed to receive standard drain pipes into receiving inlets and create a smooth flow channel through the pipe without any elevational differences between the inner diameter of the elbow at the junction point of the elbow and the received pipes and the inner diameter of the received pipes.