TonyMinExplorerJul 17, 2015dump valvesMy black tank dump valve is really hard to open and close now. How can I service it? I hope I don't have to remove it. Thanks
FrankShoreExplorerJul 17, 2015To spiff things up, they a little 303 Protestant Spray (plus you can use what's left over for the decals on your RV!