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CONTACT US FOR MORE INFORMATION ! <br /> 1555 Copperhill Parkway / Santa Rosa , CA 95403 <br /> Ph : ( 800 ) 688-3375 or ( 707 ) 523-2050 <br /> r1� www.westernfg . com <br /> V V ' VV V r t V V V V 7 V V <br /> 7 V ONE DIAMET = V V 17 � 7 7 <br /> rt r r r^ r <br /> b Y V 7 r v +z n +� r v v n <br /> 0 r h r <br /> fv V V 7 ' 0 C s t - - r: r• 1-1 IC C v r V 7 7 <br /> Vev Y � c . � -�: , , , o V , V V ,, V 7 q s <br /> v <br /> VV V v v V r <br /> r <br /> r r r � • . y i � • . � a r <br /> Y fi a V V Y C V Y V C `i l t ^s w V ^r t C V Y a 7 c V V ; 7 <br /> r a 7' V [r F r r "r r' -r r, 'r r. 7 F .4 '1 P 'a r '7 r <br /> V V V V V V V 4 4 V V V V Y V 4 V V V 4 V ' V C 4 P <br /> p rr y r jq r [' `,1 t+ „) C 1 r ,.'1 r 'a r <br /> d V o V V d Y V v V V 7 4 a V V y V Y V V V V 0 V a V V V G <br /> V V V C V C V V V V V V ' V V V V V V V C V 4 4 ^ D O <br /> Co - Flex piping installed under reinforced concrete surfaces of a minimum <br /> of 4 " ( 100mm ) thickness require a minimum cover of 6 " ( 150 mm ) of the <br /> recommended backfill material . <br /> Asphalt , 2 " ( 50mm ) minimum thickness , requires 6 " ( 150mm ) minimum <br /> cover of the recommended backfill material . <br /> FEB l ti 2019 <br /> Unpaved surfaces require a minimum of 14 " ( 350mm ) cover of <br /> recommended backfill material . 11L 4 <br /> After pressure testing is complete , care must be taken to insure even <br /> distribution and packing of the backfill material around the piping during <br /> the back fill process . Hand shovel material around and over piping to <br /> insure correct spacing is maintained . Backfill slowly . <br /> Additional care should be taken when initially filling the piping system to <br /> insure that all air is removed from the product piping prior to starting any <br /> pumps to prevent damage . Be certain that the operating pressure of the <br /> pumping system does not exceed the maximum operating pressure of the <br /> Co - Flex piping of 75 psi . <br /> Periodic testing of both the primary and secondary sections of the Co - Flex <br /> system may be performed at any time after installation . <br /> Please see installation instructions for DMA , dispenser mounting <br /> assemblies , and Western Fiberglass , Inc . tank sumps for details on piping <br /> penetrations . <br /> COPYRIGHT 2006 BY WESTERN FIBERGLASS , INC . <br /> ALL RIGHTS RESERVED . USE BY WRITTEN PERMISSION ONLY . Page 6 of 12 <br />