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T ONi Fiberglass Isolation Riser The fiberglass isolation riser provides a non -corrod- ing access from the street box down to the top of the tank. Since the bottom is open, the riser will fill with water if water surrounds the outside of the riser. This riser is available in lengths up to 6 feet in height. Use of only one riser will be permitted on sizes 600 thru Maxi gallons. O Maximum use of two risers Will only be allowed on .......................... 4,000 - 6' dia. or 6,000 - 8' dia. or larger tanks. [ Fiberglass Fill Tube E10 Fill tubes are screwed into rhn hnttnm of tha F," r 4" Tank Ladders FRP, aluminum or carbon steel ladders are attached at the tank bottom by FRP mounts and restrained at the top by an FRP bracket. This allows the ladder to slide freely to com- pensate for tank expansion or contraction. (Manway and ladc are sold separately.) OHelical Heating Coils For highly viscous products such as #6 heating oil, helical heating coils are available. Attached to a heavy-duty, epoxy -painted, carbon -steel 22" I.D. manway cover, the 1 1/4" schedule 40 carbon - steel heating coil is installed to leave 9" clearance from the bottom of the tank. O SUction and return couplings, not included with the heating coil, car installed in the manway lid. Coil area for heat calcula- tions is 20.6 square feet. A heating coil can also be centered on 30" and 36" manway covers. The heating coil shipped separat For a detail drawing on the heating coil, please contact your local Xerxes representative. Lifting Lugs Each tank provided with a minimum of one lifting lug. OFiberglass Holddown Straps Straps are used when a tank requires anchoring. The straps provide the link between the tank and the owner -supplied anchoring hardware. For more information on straps and their use, refer to the current Xerxes Installation Manual. 13