The flexible conduits are used to be connected with out-of-axis appliances or devices that undergo strong vibrations such as electrical motors. They are also preferrable for the installation of lighting fixtures and as substitutes for hard pipes, if the latter are difficult to handle. The SP… series flexible conduits are used for connecting misaligned equipments or equipments subjected to vibrations. Several constructive assemblies can be obtained, with fixed-fixed. Swelling/fixed or swelling/swelling fittings.