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M PT Coupling Ferrule/Sleeve Crimp Diameter Calculation Ferrule/Sleeve Crimp Diameter Calculation ProGrip Group of PT Coupling manufactures coupling retention industrial,and fire protection.Various types of hose shank systems for attaching hose to fittings either by externally designs are utilized to maximize the performance of the different crimping or internally expanding.The products range in sizes fittings and ferrule combinations.All of the different hose shanks from 1/2 " up to 8". Standard materials available are plated are available with any type of connecting end.Ends available carbon steel and stainless steel.Other materials are available on include male and female NPT Pipe,Victaulic� style groove,butt request.The fittings produced cover a wide range of applications weld,socket weld,I-Line,Pacific Coast thread,tri-clamp,and including sanitary,pharmaceutical,chemical,petroleum, flanged. Interlock Area Shoulder of ferrule interlocks into groove of body or fitting, preventing the ferrules from sliding off the fitting, This feature greatly improves hose retention. Hose Ferrule Body Following is the calculation to determine the crimp diameter required for various hoses and end fittings: The following information must be measured or determined: Hose Assembly End Example Hose O.D. __________ 2.50 Hose I.D. __________ 2.00 Fitting Hose Shank Mean O.D. __________ 2.00 Ferrule/Sleeve Wall Thickness __________ .065 Hose Wall Compression Required (%)*__________ 25 *This number is usually supplied by hose manufacturer and generally is from 20-25%. From this information, the crimp diameter can be determined using the following formula: Crimp procedures must be followed closely and safely by hose assembly personnel. Crimp Diameter = Hose O.D. - Hose I.D. + Shank O.D. + (2 x Ferrule Wall Thickness) + [(-Hose Comp) x (Hose O.D. - Hose I. D.) / 100] It is recommended that hydrostatic testing be Example: Crimp Diameter = 2.50 - 2.00 + 2.00 + (2 x .065) + [( -25) x (2.50 - 2.00) / 100] = 2.505done on hose assemblies to assure the above crimp diameters are sufficient for the intended Hose Assembly End Crimp Diameter = _____ -_____ + _____ + (2 x _____ ) + [ ( _____ ) x ( _____ - _____ ) / 100] = _____application. 91
Goodyear Rubber Products
