Carbonated Beverage Backflow Preventer The device consists of two independently acting check valves biased to a normally closed position. A normally open atmospheric port is located between the check valves. During backflow conditions, the port vents gases and/or liquids. Additionally, the CBBP is equipped with a 100 mesh integral strainer screen at the inlet. All wetted areas of the device are non-toxic, corrosion resistant, and approved for use with potable water. The CBBP is suitable for supply pressures to 150 psig and water temperatures from 33F to 130F • Compact Design • Lowest head loss • Atmospheric vent provides indication of problems • Integral strainer for equipment protection • Repairable check assemblies • Non-metallic body for corrosion resistance • Certified to NSF-61 and NSF-18 listed