Coupling manufacturers Flexible Universal Joint Details: Ductile Iron Universal Coupling According to ISO2531&EN545 Size Range: DN40-DN600 Pressure: PN10/16 Bolts and Nuts material:Carbon Steel Coating: Fusion Bonded Epoxy coating Use: This kind of couplings can be used for ductile iron or PVC pipes. Features For STEEL . DI , UPVC,PPR,CI AND AC pipes or almost any other rigid pipe material . In the form of wide range (up to 23mm) couplings , are designed to joint pipes of various outside diameters with the same of different nominal bore . The ability of universal coupling to joint dissimilar pipe materials is a bonus feature in both repair or permanent situation . Direction for use The product is easy to install and easy to disassemble. Set the connector evenly in the joint position of two different pipes and then tighten the screws.Is a very flexible coupling system used to assemble almost all types of piping materials and to repair old piping systems. Material Specifications: BodyDuctile Iron GGG50/40 End RingDuctile Iron GGG50/40 Rubber SealRubber Bolt &NutDacromet Coated Steel CapPlastic Flexible Universal JointCoupling manufacturers website:http://www.tianyisunspipeline.com/coupling/