Metal flexible hoses TOFLEX with parallel waves without circumferential welding assure a perfect pressuretight and an high flexibility with external braid. They have, according to working or design pressure, one or two braids with metal wire, in order to resit to the force due by internal pressure. Metal flexible hoses can make: free movements, straight movents, angula movements, vibrational movements, etc.

TOFLEX corrugated hose is engineered to provide maximum service life when properly installed. Improper installation, incorrect flexing or careless handling in an application will reduce the effective service life of the hose and cause premature failure of an assembly. The following installation and handling precautions should be observed to achieve optimum performance from your corrugated hose assemblies. Do not twist the hose assembly during installation when aligning the bolt holes in a flange or in making up pipe threads. The utilization of lap joint flanges or pipe unions will minimize this condition. Always install the hose so that the flexing takes place in only one plane. This plane must be the plane in which the bending occurs. The repetitive bending of a hose to a radius smaller than the radius listed in the specification tables for corrugated hose will result in premature hose failure. Always provide sufficient length to prevent over bending and to eliminate strain on the hose. When installing the assembly in a horizontal loop, provide support for the arms to prevent the hose from sagging. A piping system which utilizes metal hose to absorb movement must be properly anchored and/or guided. Always support the piping to prevent excessive weight from compressing the hose and relaxing the braid tension. Avoid to use hoses with an higher pressure than allowable one. To check the working conditions, you must multiply the pressure correction factor "k" by working pressure (see table below according to standard ISO/DIS 10380); the result must be greater than working effective pressure.