About This Backflow Prevention: This 3" PVC backwater valve prevents sewage backflow into your home during heavy rains or sewer line blockages. Easy Installation: The valve features a slip connection for quick and easy installation into existing PVC piping systems. Durable Construction: Constructed from robust PVC material, ensuring long-lasting performance and resistance to corrosion. Flow Direction: Clearly marked with 'Flow Direction' indicator for proper installation orientation. Compact Design: Compact size allows installation in tight spaces while maintaining optimal flow capacity. Overview Material : Plastic Brand : HYDRO MASTER Item dimensions L x W x H : 4.3 x 4.5 x 4.5 inches Exterior Finish : Plastic Outlet Connection Type : Socket Number of Ports : 2 Outlet Connection Size : 3 Inches Manufacturer : HYDRO MASTER