The B332 is the light-and-simple way to put 26 gallons of water aboard. At 28 lb empty it is a one-person install - up a companionway, through a locker hatch, into position without rigging a lifting party - and that alone decides plenty of refits. Ronco also molds heavyweight blanks at this same capacity for punishing installs; this one is the standard-wall workhorse for the far more common case where the tank sits in a protected compartment and just needs to hold water for twenty years.
It ships without fittings, and that is a feature. Instead of adapting your plumbing to factory port locations, you print the drawing below, mark exactly where the fill, vent, and pickup should go - the on-page fitting planner walks you through it - and Ronco spin-welds or thread-installs them to your marks in Tustin, California, the way they have since 1974. Fresh water is this molding's home turf: FDA-compliant polyethylene, safe for potable supply. Like every B-series blank it can also be fitted as a gray or black waste holding tank if your boat needs holding capacity more than drinking capacity.
Full, it carries about 217 lb, so give it flat support and honest strapping. Size up or down through the boat tank category, look at the road-going fresh tanks under RV water tanks, or start from the complete line on the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B332 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.
