Con-Stab fittings are designed to join pipe meeting ASTM D2513;Category 1 mechanical joint;Patented design seals on the protected interior surface of the pipe;Pressure rating 125 psig;Size Range - 1/2" to 2";Configurations (Couplings, Tees, Elbows, End Caps, Reducers);Can be used for the following PE materials - 2306, 2406, 2708, 3306, 3408, 3708, 4710;Con-Stab fittings are available to transition from PE to copper, PE to steel and PE to PVC;Fast installation, no need for fusion equipment;Third party tested to Uniform Plumbing Code (UPC)