Hi, everyone, Steve here with etrailer. Let's take a look at the Valterra E-Valve Electronic Waste Valve. This is gonna work for your RV's black water tank and it makes a three-inch hub-and-spigot connection. So, just like it says, electronic valve, it's gonna replace your existing manual black tank sewer valve or another electrical one if you already have one. And when you get this… see more >