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SP0178-2007 <br /> Flanged Outlet <br /> Weld <br /> r ii., <br /> !NI fmm <br /> in.) Slip-On Flange <br /> Overall Lengthn <br /> Shall Be as Short + 1r0 <br /> \ Weld Neck <br /> as Possible Weld III r Flange <br /> I 1 <br /> gli MI <br /> I <br /> Round Corners Inside of <br /> Tank or Il <br /> Vessel Sharp <br /> DOCorners <br /> DON'T <br /> Pad Type Threads <br /> /41 , I <br /> / IhiliZ 57—A <br /> '4'44 /,pi, 5 <br /> Round These \ <br /> Corners Inside of Tank or <br /> Vessel <br /> lk <br /> Sharp Corner <br /> DO DON'T <br /> FIGURE A4 <br /> The outlets shall be flanged or pad-type rather than threaded. Within pressure limitations, slip-on flanges are preferred because <br /> the inside surface of the attaching weld is readily available for rounding edges and grinding. If operating pressure dictates the <br /> use of weld neck flanges, the inside surface of the attaching weld is in the throat of the nozzle, making repair of surface <br /> irregularities by grinding rather difficult. <br /> NACE International 7 <br /> 190 <br />