This 3 inch ABS Hub x Hub Backwater Valve provides unrestricted flow and a threaded access that seals hand tight and allows for easy maintenance and inspection.Used to prevent backup in sewer lines. Hub x hub connection type.; ; Brand Name: Sioux Chief Sub Brand: ProCheck Inlet Diameter: 3 in. Outlet Diameter: 3 in. Connection Type: Slip Material: Plastic Valve Type: Swing Product Type: Valve Average Lead Content: Lead-Free Maximum Temperature: 160 °F Maximum Pressure: 10 psi Packaging Type: Bulk Mounting Orientation: Horizontal Minimum Temperature: 32 °F End-to-End Length: 8-1/2 in. Activation: Pressure Driven Fits Pipe Size: 3 in.