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SL <br /> 9 <br /> I� Helical Heating Coils <br /> For viscous products, helical heating coils are available. <br /> Attached to a heavy-duty epoxy painted carbon steel 22"I.D. <br /> manway cover, the 1-1/4" schedule 40 carbon steel heating <br /> coil is installed to leave 8" clearance from the bottom of the <br /> tank. Suction and return couplings can be installed in the <br /> manway lid. (Not included with heating coil.)Coil area for heat <br /> purposes is 20.6 sq. ft. A heating coil can also be centered on <br /> 30" and 36" manway covers. <br /> Heating Coil Material:carbon steel <br /> ,28" dia. x /,"thick <br /> ° e-s o <br /> 24-Vholes on a <br /> p <br /> I 5'6" \0 /251N" bolt circle dia. Tank Ladders <br /> 31/'„ `2" NPT couplings(optional) Fiberglas tanks are available with a factory installed carbon <br /> steel ladder. Attached to the tank bottom with FRP mounting <br /> lugs, the ladders are retained at the top with FRP slip lugs on <br /> Q the trunk of the manway to allow for contraction and <br /> expansion of metal ladders. (Manway and ladder are sold <br /> °-O -0 separately.) <br /> 11;" coil inlet and outlet <br /> i <br /> Heavy-duty 22" <br /> ID manway 3" <br /> I <br /> - --I I <br /> Varies <br /> with tank <br /> diameter <br /> 22" manway on 6',8',and 10' diameter tanks <br /> 12" FRP slip lug <br /> 1i <br /> 1 i I <br /> %" rung - <br /> 0 <br /> 4,'0„ <br /> j <br /> 12"(typ) <br /> 0 <br /> o � o Carbon steel ladder <br /> N <br /> o <br /> FRP universal <br /> I <br /> i i <br /> 15" mounting lug <br /> '� B"min. <br /> 0 <br />