ALUMINUM PIPE Reefer Drain System is designed to effectively drain the evaporator's condensed water and the defrosted water to the outside of the container,making sure that the inside remains nice and dry. we could provide full reefer drain parts, which covers PVC flange, auto drain, Kazoo, aluminium tube,plugs. contact us by: eva@containerplywood.com for any reefer spare parts you would have interest!