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Classification of Motion (continued)Traveling LoopsIn a piping system where axial movement must beaccommodated or where the magnitude of the motion is inexcess of the limits of an offset movement, the traveling loopconfiguration offers an ideal solution. In traveling loops, thecenterline of a hose assembly is bent in a circular arc. Travelingloops accommodate movement in one of two ways. A constantradius traveling loop accommodates motion by varying thelength of the arms of the assembly while the radius remainsconstant. A variable radius traveling loop accommodatesmotion by varying the bend radius of the hose assembly. Bothtypes of traveling loops can be installed to absorb eitherhorizontal or vertical movement. The constant radius travelingloop provides for greater movement while the variable radiustraveling loop requires less installation space.Traveling LoopsL = Live Hose Length (inches)R = Minimum Centerline Bend Radiusfor Constant Flexing (inches)T = Total Travel (inches)Constant Radius Traveling Loop – Class AT/2 T/2C L2RC LSupportH 1C LC LT/2C LT/2C LC LC LL = 4R + T/2H 1= 1.43R +T/2H = Hang Length of the Loop (inches) H 12RVariable Radius Traveling Loop – Class BC LC LTH 2C L C L C L2R TH2H 1C LC LC LC L2RC LH1C LSupportL = 4R + 1.57TH 1= 1.43R +0.79TH 2= 1.43R +0.5TDS-EN-1000 (05)800-232-3539 610-367-2260 Fax 877-647-4011 www.penflex.com sales@penflex.com 22pflex.catalog_090403.indd 224/6/09 6:04:44 PM