1-1/4" X 1-1/4" X 1-1/4" Permasert 3-Way Tee Permasert couplings have been accepted as an industry standard and helped utilities throughout the world simplify service line installations and save money. The reason for this success is simple. Permasert couplings are safe and remarkably easy to install. In addition, Permasert couplings are non-corrosive and require no cathodic protection or protective coatings. Permasert couplings utilize a tapered collet and a stainless steel support ring to “grip” the tubing. With this system, the greater the pull-out force, the more tightly the collet grips the tubing. As a result, the pull-out strength of Permasert couplings is greater than the connected polyethylene tubing. Under normal conditions, the Permasert coupling imparts almost no stress on the PE tubing. The coupling’s one-piece construction esures consistent, gas-tight connections in any weather condition.Fast and easy installation, requires only one person.Total installed cost savings versus electrofusion and heat-fusion joined polyethylene.No special tools, costly installation equipment, or special training required to install.Smaller ditch required means lower excavation and restoration costs.Non-corrosive couplings eliminate the need for protective coatings and cathodic protection.Safe, dependable performance for over 30 years. More than 40 million installed worldwide.Minimal stress on PE tubing.Molded from industry leading PE4710/PE3408.Available in metric sizes.All weather installations.