Check the listing for details. 1/2 lead free wilkins 975xl2.. Condition: New – Open box. Listed at 520.00 USD. This high-quality backflow preventer is a must-have for any plumbing system. It is designed to prevent backflow into your drinking water or wastewater system, ensuring that your pipes stay clean and free from contaminants. The manual valve operation makes it easy to use and maintain, while the reduced pressure zone (RPZ) backflow preventer type provides reliable and safe operation.With a pipe size of 1/2 inch and suitable for use with water and wastewater, this Wilkins 975xl2 backflow preventer is perfect for any business or industrial application. It comes in a unit quantity of 3, making it easy to install and maintain multiple pipes. This backflow preventer is part of the Valves & Manifolds category and is a must-have for anyone looking for a reliable and safe plumbing solution.