Nineteen gallons stretched long and lean: the Ronco Plastics B501 is a heavy-walled 76 lb molding whose slender proportions follow a hull side or frame rail instead of demanding a square hole in your floor plan. It is capacity for the spaces between things.
The B501 is a dual-role B-series shell, so its role rides on your order. Fresh water fittings yield a potable supply tank in food-contact polyethylene; waste fittings yield a narrow gray or black holding tank. Ronco installs everything per order, spin-welded or threaded to your marks, which in a long tank means the fill can go at one end, the pickup at the other, and the vent wherever gravity wants it.
Loaded, plan for about 158 lb of water at 8.34 lb per gallon, distributed along the tank's length; support it continuously. Print the dimensioned drawing below, trace your run, and place ports with the on-page fitting planner.
Molded in Tustin, California by Ronco Plastics, since 1974. Compare the 19 gallon water tank and 19 gallon holding tank for single-role builds, or scan the full marine range. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B501 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.
