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Additional Muble-Wail <br />Tank Accessories <br />Tank Bottom Sumps <br />Tank bottom sumps are avail- <br />able to facilitate condensation <br />removal. The sumps are 4" <br />deep and must be installed <br />under a manway cover that <br />has a center fitting. Only one <br />sump may be used per tank. <br />Special instruction procedures <br />must be followed when install- <br />ing the tank with bottom sump. <br />Sumps are available for all <br />double-wall tank sizes and <br />models. <br />Tank Ladders <br />Fiberglas tanks are available <br />with a factory installed carbon <br />steel ladder. Attached to the <br />tank bottom with FRP mounting <br />lugs, the ladders are retained <br />at the top with FRP slip lugs <br />on the trunk of the manway <br />to allow for contraction and <br />expansion of metal ladders. <br />(Manway and ladder are sold <br />separately.) <br />Tank ladders are not recom- <br />mended on tanks 1,000 gallon <br />capacity and smaller. Because <br />of limited space, the ladders <br />interfere with tank entry. <br />Fiberglas° Fill lobe <br />' r13e r= <br />f Ih Igi as fill tubs screw into <br />the bottom of a 6" x4" double - <br />tapped reducer bushing which <br />is lnserted In a standard 6" <br />!til iir kC J!ItEU <br />mi'I 5s of vrse specified). <br />Bottom Deflector Rate <br />Deep <br />22" manway on 6', 8'. and 10" diameter tanks only <br />The top of the 4" opening is <br />closed with a 4" threaded plug <br />to facilitate shipment and testing. <br />When the 4" diameter <br />Fiberglas fill tube is specified, <br />the 6" NPT fitting must be <br />located in the center of the <br />manway cover or 6" NPT tank - <br />mounted fitting. <br />Note: Some tank tightness <br />test methods require removal <br />of the fill tube. The Fiberglas <br />fill tube cannot be easily <br />removed after it is installed. <br />-I_ <br />reek., b"mm�p <br />�r., Mai sy Ccv.. <br />MH <br />_ run rnme <br />pinl -. a' FRP i <br />mn.e <br />I M [ne <br />rr <br />�I re, wps <br />urn�n. o a"x em,om <br />Tank Bottom Sump <br />FRP slip lug <br />2Y,' <br />Carbon steel ladder <br />FRP universal <br />mounting lug <br />--n. Vai ,Mx nos_ <br />16' lll. ln 13' Ywmbr pr,4t <br />Tank bolmr <br />Fill Tube—for 41e fittings <br />Fill tubes for 4" fittings are not <br />supplied by O/C Tanks, but <br />are available from petroleum <br />equipment distributors. <br />The tube slips inside the fill <br />riser pipe to permit product to <br />be dropped near the bottom of <br />the tank. Tubes are usually <br />furnished in standard lengths— <br />flared at one end, straight cut <br />at other. The straight end <br />should be cut on a 450 angle <br />and located 4" above the <br />bottom of the tank, <br />