4 in Reduced Pressure Principle Backflow Preventer, Check Valve Assembly

SPECIAL ORDER ITEM. Review Returns Policy before purchase. This check valve assembly provides critical protection for potable water lines by preventing the backflow of contaminated water caused by backsiphonage or backpressure. Engineered for high-performance fluid control, the unit maintains a pressure rating of 175 psi and operates safely in water temperatures up to 140 degrees Fahrenheit. The design allows for direct integration with gate and butterfly valves using FIP connections, ensuring reliable containment within municipal or industrial plumbing systems. Maintenance is streamlined through an accessible configuration that permits service of the internal checks and relief valve without requiring the device to be removed from the piping line.