PE-X x PE-X coupling Heating MJ270. PE-X-PE-X connection 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. The use of a straight insulation kit with shrink caps or EPDM-end caps is recommended for underground connections. • 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. 125/11.4, 2 x 4”, 125x125.