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Petroleum piping + , W&I <br /> •Slope the product and vapor return pipe <br /> '/a inch per foot(minimum)from dispensers <br /> to storage tanks.*Proper station layout calls ! s <br /> for conduits and petroleum piping to be in Y f <br /> separate trenches or segregated in tank <br /> excavation areas.•If conduits must cross <br /> product lines,they shall do so at a 90°angle. u `r r" =f o- - =r r ""'^• <br /> ' Y • tib fV � �� .,T4A. <br /> '�/� <br /> Sumps and dispenser .= <br /> pans <br /> _ {p <br /> •Do not run petroleum piping in the same ' <br /> trench with electrical conduits.•Petroleum r ` <br /> lines should enter on one side of the <br /> dispenserpan and electrical conduits on the # r x r <br /> other side as shown here.•When properly <br /> installed,flex connectors will make smooth, �=' `t^ � ���_ � '• � � �.�', <br /> uniform bends without kinks;they will not <br /> cross over,rub against or touch one another, <br /> riser pipes or the sides of dispenser pans <br /> and sumps•Impact valves should remain ���,, 1+ *r `F <br /> capped at all times during construction to " t �{ r c oil <br /> keep debris out of lines. <br /> j/� <br /> tp <br /> ', <br /> •The maximum allowable penetration � ���. t , �;, �, <br /> angle at sumps is 20°.•Perpendicularir <br /> penetration of sumps is preferred; a 7 T <br /> perpendicularpenetration of dispenser <br /> pans is required. .F + ,;ter i _ ` • t <br /> � �.t,��" is r•P f '� ��� i °+. k} v� ii t ! r tV' � �����r , r' �,ii <br /> 2 <br />