Ronco part RVB239 is a light-duty 28 gallon fresh water tank for RV service with a substantial 81 pound shipping weight. It comes from Ronco Plastics' rotational molding plant in Tustin, California, operating since 1974, and gives trailers and coach conversions a high-capacity potable supply.
The molding is FDA-compliant natural polyethylene, seamless in one piece; because the resin is translucent, the tank wall doubles as a level gauge readable from outside.
Your plumbing plan drives the fitment: Ronco installs spin-weld or threaded fittings per order, located to the customer's specification, as it does on every tank. Any drawing shown depicts the blank molding before fittings go in. OneSource Plastics is an authorized Ronco Plastics dealer.