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. I <br />SEE STD. PLAN R412 FOR <br />INSTALLATION DET/�ILS <br />Standpipe Wall <br />plate-welded to <br />stub r/aachine-cut <br />orifice —� <br />Stub welded to standpipe <br />orifice � elev. <br />� MAIN RESTRICTOR ASSEMBLY W/LIFT <br />GATE TO CONFORM TO DETAIIS ON <br />STD: N411. <br />orifice <br />elbow, banded to stub <br />SECONDARY ORIFICE DETAIL <br />ALL PARTS TO BE <br />pI.UMINUM <br />�;r <br />' 12 <br />12 <br />Z-4 <br />EACH ORIFICE TO BE SIZED T( <br />RELEAS@ 25k OF ALIAWABI.E Q <br />UNDER MAXIMUM HEAD <br />everett <br />� <br />Orifice � lev, <br />��I-= 4�B" <br />Orifice � el�v <br />��Ori Ece t elev <br />� <br />i�� = 3%+ <br />a <br />L <br />or <br />_o <br />a� <br />Orifices <br />(See Detail <br />Above) <br />J��I,00 '�I=Z�i}- �. <br />RESTRICTOR UNIT <br />MULTIPLE ORIFICE RESTRICTOR 7d��82 <br />2of7. <br />413 <br />CITY OF EVERETT - DEPARTMENT OF PUBLIC WORKS <br />� <br />