US Standard RV Black & Grey Tank Valves Compatible with GrenTec, Blade, Valterra, Bristol,Camco and Anonda Valves. Inlet Connection Type: Glue on 3″ PVC Pipe. Style: 3″ Hub to 3″ Lug Valve. Included Components: 1X 3″ Hub to 3″ Lug Waste Valve.