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OPU01 milli III <br /> Fiberglass Isolation Riser Helical Heating Coils <br /> The fiberglass isolation riser provides a non-corrod- For highly viscous products such as#6 heating oil, <br /> ing access from the street box down to the top of helical heating coils are available.Attached to a <br /> the tank. Since the bottom is open, the riser will fill heavy-duty, epoxy-painted, carbon-steel 22"I.D. <br /> with water if water surrounds the outside of the manway cover, the 1 1/4"schedule 40 carbon- <br /> riser.This riser is available in lengths up to 6 feet in steel heating coil is installed to leave 9'clearance <br /> height. Only one from the bottom of the tank. <br /> riser is permitted Suction and return couplings, <br /> With tank sizes less not included with the <br /> than 4,000 gallons, heating coil, canlbeb <br /> due to possible installed in the <br /> buoyant forces. manway lid. <br /> A maximum of two ....................... Coil area for <br /> risers may be used heat calcula- <br /> on tank sizes greater tions is 20.6 <br /> than 4,000 gallons. square feet. <br /> A heating coil <br /> can also be <br /> centered on <br /> 30"and 36" <br /> Fiberglass Fill Tube Thmanway <br /> heating cove <br /> shipped separately. <br /> Fill tubes are screwed into For a detail drawing <br /> the bottom of the 6"x 4" Aft on the heating coil, <br /> NPT double-tapped re- please contact your <br /> ducer bushing that is local Xerxes representative. <br /> located iri a 6"service <br /> fitting.The bottom <br /> of the fill tube is lo- <br /> cated 4'above the <br /> bottom of the tank <br /> with the open end Lifting Lugs <br /> slanted 450.The top <br /> of the 4"NPT service Each tank provided with a minimum of one lifting <br /> fitting is closed with a lug. <br /> 4'cast4on plug to O <br /> facilitate shipping and <br /> testing.A 6"NPT fitting is <br /> provided to accommodate _ <br /> fiberglass fill tube. <br /> Tank Ladders <br /> FRP,aluminum or carbon <br /> steel ladders are <br /> attached at the <br /> tank bottom OT Fiberglass Holon Straps <br /> by FRP mounts <br /> and restrained Straps are used when a tank requires anchoring. <br /> an FRP bracket at the top The straps provide the link between the tank and <br /> by the contractor the owner-supplied anchoring hardware. For <br /> [o allow the fad more information on straps and their use, refer to <br /> der to float freely, the current Xerxes Installation Manual. <br /> which compensates 3 �/4_ <br /> for tank expansion <br /> or contraction. <br /> (Manway and ladder <br /> are sold separately.) <br /> 1-3/8- <br /> 13 <br />