Duplex Bushings are used to convert a single tank opening into two smaller threaded openings.
Fluidall offers the Roth Home Heating Oil Tank Duplex Bushing with two slip-through compression fittings for either 3/8in or 1/2in copper tubing for fuel supply and return lines. The flange is designed to seal against tank opening with flat #3 gasket (supplied). When a return line is not being used or is replaced by a de-aerator, one fitting could be replaced with a steel plug or could the available fitting could be used as a second fuel oil supply line.
Installation for Home Heating Oil Tank Duplex Bushings
Duplex Bushings should be installed directly into a top Roth Tank’s opening. The Duplex Bushings are held in place by the Roth Tank cap nut. Duplex Bushings do not require the use of an additional 2" NPT Adapter like a standard threaded tank bushing would require.