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Roth Double-Wall Oil Storage Tanks (DWT)
The Roth Double Wall Safety Fuel Oil Storage Tank (DWT) is made with a seamless blow-molded polyethylene inner tank and a 19 ga. galvanized outer tank with leak-proof seams. Both inner and outer tanks are pressure tested at the factory during assembly and do not require further field testing. The DWT also comes with a detached saddle base which the tank is placed on at the time of installation. The tank shall be placed into service in accordance with local codes on a flat or level surface. The final location must have the tank
label visible after installation. A minimum of 2” from all walls or obstructions is recommended for normal tank expansion and visual inspection.
The integral base support shall not be removed and raising the tank height is not allowed except on a continuous concrete platform at least 6” wider than the tank base at all sides. All local fire code set-backs for fuel oil storage tanks must be observed.
Tanks installed indoors shall not be exposed to direct sunlight on any plastic parts. Tanks installed outdoors shall be assembled with the required cover. All tanks must be installed with an approved vent alarm in order to maintain warranty requirements.