The Standard Repair Kit is compatible with the 6” Models 350, 350A, 450, 375, and 475 Backflow Preventers. Repair Kit components conveniently come packaged with everything you need, including two Check O-Rings, eight Poppet Bolt O-Rings, and two Seal Rings. Repair Kits are sold as accessories for quick and simple repair needs, providing long-lasting protection from both backsiphonage and backpressure of polluted water into the potable water supply.
