Every RV has at least 1 Black and 1 Gray water holding tank. Each tank has a waste valve that can fail, and when it does, you need to be prepared to replace it. There is more to it than just buying and installing it. Before getting a tool out, you should slide under that RV and determine which valve leaks and what size it is. Also, inspect for damaged fittings and pipes for leaks or potential leaks.

Now is the time to do this time of work. You will already have the tanks emptied and cleaned, and it is much easier to take a few pictures then go to your local RV Parts Store to purchase the right parts before you ever start.

There are some cases where taking apart the plumbing before you begin can aid in getting the right parts.

Eric Stark explains everything you need to know about RV Waste Valves.

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