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y r�GW� <br />1) � • I I, � • �� } `�^ * � �w»,(5 Wit. �' i?+ �n,�.,y,�,�,� .v� 1 �'��, -. <br />0 <br />N <br />The fiberglass isolation riser provides a non -corrod- <br />ing access from the street box down to the top of <br />the tank. Since the bottom is open, the riser will fill <br />with water if water surrounds the outside of the <br />riser. This riser is available in lengths up to 6 feet in <br />height. Only one <br />riser is permitted <br />with tank sizes less <br />than 4,000 gallons, <br />due to possible <br />buoyant forces. <br />A maximum of two ................. <br />risers may be used <br />on tank sizes greater <br />than 4,000 gallons. l <br />Fiberglass Fill Tube <br />Fill tubes are screwed into <br />the bottom of the 6" x 4" <br />NPT double -tapped rt <br />outer bushing that is <br />located in a 6" service <br />fitting. The bottom <br />of the fill tube is Io - <br />cared 4" above the <br />bottom of the tank <br />with the open end <br />slanted 450. The top <br />of the 4" NPT service <br />fitting is closed with a <br />4" cast-iron plug to <br />facilitate shipping anc <br />testing. A 6" NPT fitting is <br />provided to accommodate <br />fiberglass fill tube. <br />FRP, aluminum or carbon <br />steel ladders are <br />attached at the <br />tank bottom <br />by FRP mounts <br />and restrained <br />at the top by <br />an FRP bracket <br />by the contractor <br />to allow the lad- <br />der to float freely, <br />which compensate <br />for tank expansion <br />or contraction. <br />(Manway and ladd <br />are sold separately. <br />Helical Heating coils <br />For highly viscous products such as #6 heating oil, <br />helical heating coils are available. Attached to a <br />heavy-duty, epoxy -painted, carbon -steel 22" I.D. <br />manway cover, the 1 114" schedule 40 carbon - <br />steel heating coil is installed to leave 9" clearance <br />from the bottom of the tank. <br />Suction and return couplings, <br />not included with the <br />heating coil, car <br />installed in the <br />manway lid. <br />Coil area for <br />heat calcula- <br />tions is 20.6 <br />square feet. <br />A heating coil <br />can also be <br />centered on <br />30" and 36- <br />manway covers. <br />The heating coil <br />shipped separate <br />For a detail drawing <br />on the heating coil, <br />please contact your. <br />local Xerxes representative. <br />Lifting Lugs <br />Each tank provided with a minimum of one lifting <br />lug. <br />�T Fiberglass Holddown Straps <br />Straps are used when a rank requires anchoring. <br />The straps provide the link between the tank and <br />the owner -supplied anchoring hardware. For <br />more information on straps and their use, refer to <br />the current Xerxes Installation Manual. <br />�- -+ - 3-1/4 <br />1-3/8- <br />; 3 <br />.3/8" <br />13 <br />