PE-X coupling heating/COOL - 6/16bar MJ341. Straight coupling for use in piping systems equipped with transport pipes for heating, cold or cooling water applications. The coupling has a long supporting pipe for optimal clamping, a conical outside thread connection and a clamping ring with stainless steel bolt. The included remote plate makes it easier to fit the coupling. 125/11.4 4”M 125 • Max operating pressure: 6 bar (16 bar) • Max fluid temperature: +95°C (+25°C) • PEX-a and PE pipes: SDR 11 • Supporting pipe material: CW602N • Clamping ring material: CW602N