Water hauling, remote cabins, horse trailers, big off-grid rigs: at 135 gallons, the Ronco Plastics B300 crosses out of everyday RV territory into working-water capacity while keeping the long, low-slung format that rides well on a chassis. The molding weighs 142 lb; a full load of water is about 1,126 lb, which is a payload decision before it is a plumbing decision. Support the tank continuously along its bottom, strap it against surge, and locate it over frame structure.
The fitting layout is yours to design. Ronco installs spin-weld or threaded fittings per order at your marked positions - critical at this size, where a gravity outlet, a pump pickup and a wide fill may all need to coexist. Print the drawing below, plot the ports against how the tank will actually sit, and use the on-page fitting planner to finalize the spec. FDA-grade polyethylene means the same tank that hauls stock water can serve a potable system with a clear conscience.
Ronco Plastics has molded working tanks like this in Tustin, California since 1974. The B300 tops the sizes on our RV water tanks shelf; it ships by freight, so run your ZIP through the freight cost estimator to price the trip before checkout. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B300 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.
