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wl_29_42rev_pg 8/31/01 7:00 PM Page 34 Corrugated Metal Hose (Length) Live Length Overall Length To calculate the proper length of a hose assembly: � Verify that the installation is properly designed � Page 72 illustrates the right and wrong ways to install a hose assembly. Basically, there are three considerations: 1. Do not torque the hose. 2. Do not overbend the hose. 3. Do not compress the hose. � Calculate the live length of the assembly � The live length of the assembly is the amount of active (flexible) hose in an assembly; that is, the hose between the braid collars. Pages 73 - 75 give formulas to calculate live length for a variety of common hose installa- tions. � Calculate the overall length of the assembly � Overall length is equal to the live length plus the lengths of the braid collars and fittings. When adding fitting lengths be aware that the points from which measurements should be taken vary for different fitting types. When calculating overall length for assemblies with threaded fittings, remember to account for the length of thread that is lost by threading into the mating connection (see Thread Allowance chart on page 72). JIC/SAE type fittings are measured Elbows and other fittings with a from the seat of the fitting. radius are measured from the centerline of the fitting. HoseMetalCorrugated Flanges are measured from the Threaded fittings are measured to flange face or from the face of the the end of the fitting. stub end if one is used. For assistance in making any calculation or for dimensional information on fittings, please contact Hose Master's Customer Service Department. 34
Goodyear Rubber Products
