SharkBite straight through quick connect pipe fittings are convenient for connecting copper pipes, PEX pipes, CPVC pipes, PE-RT pipes or SRD9 HDPE pipes. No welding, auxiliary tools, adapters and gluing are required. Insert the pipe into the pipe fitting to the marked depth, and then seal it with our special O-ring. Once the pipe is inserted, the stainless steel toothed ring will bite tightly. This push in connection pipe fitting is specially designed for drinking water and radiant heating (including directly buried underground or in the wall), and no maintenance opening is required. The daily use temperature is 200 ° F and the daily use pressure is 200psi.