Keep your water lines safe with the Zurn Wilkins 700XL dual check valve. It protects against backflow from backsiphonage or backpressure in low-hazard potable water setups. Built with corrosion-resistant low-lead bronze and stainless steel springs, it’s tough and long-lasting. The 3/4-inch female union inlet and male outlet make installation flexible—mount it horizontal or vertical (just keep it dry). It’s ASSE 1024 listed, CSA certified, and meets NSF/ANSI 61 for lead-free compliance. A reliable, no-fuss choice for plumbing pros or DIYers who want trusted backflow prevention.