E-10Cutting/Flaring the pipes1 Make sure that you have the required tools available.(pipe cutter, reamer, flaring tool and pipe holder)2 If you wish to shorten the pipes, cut it with a pipe cutter, taking care to ensurethat the cut edge remains at a 90° angle with the side of the pipe. Refer to theillustrations below for examples of edges cut correctly and incorrectly.3 To prevent any gas from leaking out, remove all burrs at the cut edge of thepipe, using a reamer.4 Slide a flare nut on to the pipe and modify the flare.Outer diameter (D) Depth (A)6.35 mm (1/4”)9.52 mm (3/8”)12.70 mm (1/2”)15.88 mm (5/8”)19.05 mm (3/4”)1.3mm1.8mm2.0mm2.2mm2.2mm5 Check that the flaring is correct, referring to the illustrations below forexamples of incorrect flaring.6 Align the pipes and tighten the flare nuts first manually and then witha torque wrench, applying the following torque.Valve Flare nut Valve cap Pressure port cap Valve needle Pressure portWrench(mm) N•m Wrench(mm) N•m Wrench(mm) N•m Wrench(mm) N•m Wrench(mm) N•m1/4" 17 18 23 20 18 16~18 Allen(hex.) 5 9 - 0.343/8" 22 42 23 20 18 16~18 Allen(hex.) 5 9 - 0.341/2" 26 55 29 40 18 16~18 Allen(hex.) 5 13 - 0.345/8" 29 65 29 40 18 16~18 Allen(hex.) 5 13 - 0.343/4" 36 100 38 40 18 16~18 Allen(hex.) 5 13 - 0.34CAUTIONIn case of welding the pipe, you must weld with nitrogen gas blowing.Oblique Rough BurrUneven ThicknessCrackedDamaged SurfaceInclined