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10 Sump penetrations The Dualoy sump penetration fitting(Fig.10-1)provides a simple means of penetrating 42 to 48-inch diameter fiberglass tank risers or sumps in contained piping systems.The fitting is typically mounted through a sump wall.Ported reducing closures(Fig. 10-3) may be used inside the sump to isolate the annular space between the primary and the containment pipe and to provide a monitoring port.Alternatively,the sump fitting is available with a factory-installed monitoring port(Fig.10-6).The standard sump fitting can be used in square sumps by reversing its direction. Crowned to fit 42 to 48-inch riser 42 to 48-inch riser (not to scale) Sand 1 inch around 4-inch hole I urrs Figs.10-1,2.The Dualoy sump fitting Remove around hole (left) provides a simple means of penetrating 42 to 48-inch diameter fiberglass tank risers(right)or sumps in contained piping systems. Before installing the primary • Use a hole saw to cut a 4-inch hole in the sump wall as low as possible to provide maximum slope into the sump. • Remove any burrs from the edge of the hole. • Check hole size by dry fitting the fitting from the inside.Make sure the thickest part of the saddle-shaped flange faces upward. • Using a disc grinder,abrade about 1 inch around the hole to provide a rough bonding surface. • Mix Ameron B20 adhesive following the instructions included in the kit.Apply an even layer of adhesive to • The edge of the hole and around the hole, • The bonding surface of the fitting flange,and • The threads to lock the nut permanently in place. • Install the fitting in the proper orientation. • Make up the nut from the outside and check around the edge of the flange on the inside to verify the presence of an adhesive bead.If a bead is not visible all the way around the fitting,remove and apply more adhesive.Tighten with a wrench. • Do not move the fitting until the adhesive has cured.Follow the cure time recom- mendations on the adhesive instruction sheet After installing the primary Most specifications will call for isolating the annular containment space from the sump. This may be accomplished using 3 x 2 inch containment closure pieces as shown in Fig.10-3 or by using a sump fitting that has been provided at the factory with a bushing in the annulus between the sump fitting itself 42 to 48- and a primary pipe By others inch riser sleeve coupling as shown in Fig.10-5. Fig.70-3.A ported reducing closure When using 3 x 2-inch I reducing closures to isolates the annular space between re9 the primary and the containment isolate the annular pipe and provides a monitoring port g space between the inside the sump. 3/4 nfar 9aiv coupling and primary and the ripple installed at factory secondary,provide 13