Part RVB549 is a 19 gallon light-duty fresh water tank rotationally molded by Ronco Plastics in Tustin, California, where the company has been building polyethylene tanks since 1974. It is sized for RV fresh water service: enough onboard supply for a small travel trailer, camper van, or truck camper without giving up an entire storage bay. Shipping weight is 22 pounds, so one person can carry it to the install point and dry-fit it before plumbing.
The tank is molded in FDA-compliant natural polyethylene. The translucent wall lets you read the water level at a glance instead of relying on a sender, and the seamless one-piece molding has no joints to weep over years of road vibration.
Fittings are installed per order: Ronco supplies spin-weld or threaded fittings located exactly where your plumbing layout needs them, which is standard on every Ronco tank. When a drawing is shown, it depicts the blank molding before fittings go in. OneSource Plastics is an authorized Ronco Plastics dealer.