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<br />Standpipe: A pipe inserted <br />or screwed into the floor <br />drain will allow the sewer <br />back up to seek its own <br />level. This method may be <br />more dependable than a <br />plug that could pop out. <br />However, it has the same <br />shortcomings as a plug <br /> <br />Valves: A back up valve <br />installed in the sewer line <br />is more expensive but it <br />will not permit the sewer <br />to back up into your base- <br />ment. A valve should be <br />placed outside your house <br />where it would be easier <br />to install and maintain. <br />A valve can be manual or <br />automatic. <br /> <br />A ONf.'WA'l ~E!.k: Vf>.J...ve, <br /> <br />"\" <br /> <br /> <br /> <br />;-=..... <br />_ACaSS <br /> <br />---. <br />,.._r_.~.""'" <br /> <br />J <br /> <br /> <br />.~~.. <br />- ,~,~: <br /> <br />/I#( &,llGKL.lf" F'@M <br />11-11:. !>EWEIt ~ <br />1\U!. VALVE <br />"TO ~LOoSe. <br /> <br />24 <br /> <br />',.- -;-:-', ~.l <br />" 'j' :..1 _ . <br /> <br />., ,.1; , <br />~. <br /> <br />FLOW Fra.\ 1\-IE <br />I-lOUSE ~~ ALI.OW$ <br />"II-l!. V/>L.\IE <br />"TO OI"EN <br /> <br />- <br />/ <br /> <br />__/DIIfCrM <br /> <br />SEWER SYSTEM <br />__VE <br />_FWOIIIPIiJ. <br /> <br />HOUSE <br />..... -"TIIIN <br /> <br />/ <br />"" -..... <br /> <br />S711ElTCATatllASlll <br />I <br /> <br />