At 155 gallons, the Ronco Plastics B392 is one of the largest tanks in the B-series, a 67 x 24 x 24 inch block built for coaches, toterhomes, and boats that stay out for weeks. Full-time RV living runs on capacity like this. The molding is dual-role: with potable fittings it is a food-grade fresh water tank, and with waste fittings the identical shell serves as a very large holding tank.
Here the arithmetic gets serious: 155 gallons of water weighs about 1293 lb at 8.34 lb per gallon, on top of a 142 lb molding. This tank belongs over chassis rails or hull structure, engineered in rather than tucked in.
Fittings are installed per order, spin-welded or threaded at your marked locations, so plumbing lands where your build needs it. Print the drawing below, plan fill, vent, pickup, and drain, and use the fitting planner on this page to submit the layout. Ronco has custom-finished tanks in Tustin, California since 1974.
See related RV water tanks and RV holding tanks, and estimate delivery with the freight estimator. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B392 dimensional drawing - print it to plan your install and mark exactly where you want fittings located; Ronco installs spin-weld or threaded fittings to your marked spec.
