The Ronco Plastics RVB237 is a 42 gallon light-duty fresh water tank built for RV service, where it supplies the potable water side of a motorhome, travel trailer, or camper conversion. It is rotationally molded from FDA-compliant natural polyethylene, so the translucent wall lets you read the water level at a glance without a sender or sight gauge.
At roughly 39 pounds shipping weight, the RVB237 is a substantial molding for its class, giving a coach or trailer a two-plus-week fresh water reserve for a couple traveling off hookups. The seamless one-piece construction has no welds or joints to seep, and the natural resin carries no dyes or additives that would compromise drinking water.
Ronco does not ship this tank as a take-it-or-leave-it blank: spin-weld or threaded fittings are installed to your specification when the order is placed, so fill, vent, and outlet land exactly where your plumbing needs them. The drawing, where shown, depicts the unfitted molding. OneSource Plastics is an authorized Ronco Plastics dealer, and every RVB237 comes out of Ronco's rotational molding plant in Tustin, California, where the company has been building tanks since 1974.