Universal Coupling(wide range) Introduction Universal Coupling, also known as Wide Range Coupling, is a versatile and reliable solution designed for the connection of pipes of different materials and sizes. These couplings are highly flexible and provide a secure and leak-proof connection for various piping systems.Widely used in potable water and wastewater systems for connecting pipes of different materials and sizes, ensuring a reliable and leak-free connection. mprove the efficiency and versatility of your equipment with our Universal Coupling (wide range). Designed using advanced technology, this coupling has a wide range of motion, allowing for easy connection and rotation. Increase productivity and reduce downtime with our reliable and durable Universal Coupling. Universal Coupling(wide range) Drawing Standard Materials Of Main Parts NO Reference Material Standard 1 Sleeve Steel/ductile iron S235/EN1563 2 End Ring Ductile iron GGG450-10 En1563 3 Bolt And Nut Steel 8.8 Dacromet/Zinced ISO898-1 4 Gasket EPDM/NBR EN681-1 5 Coating FBE/Rilsan Nylon EN14901 Dimensions:(mm)