Forum Discussion

Jackie_Treehorn's avatar
Nov 13, 2013

Water Valve Leak Check and Repair

I called Winnebago to ask about replacing a leaking valve and they suggested replacing the whole assembly that includes both a 1.5 inch gray water release valve and a 3 inch black water release valve. (I have an image file of the assembly on my own computer but I don't see a way to include it here).

The original valve releases were both cabled, but at some point the black valve was replaced with one that is opened by grabbing the valve directly. The original gray valve is still cabled.

Since buying the rig we have always had water collecting past the valves but I haven't been certain whether it was the gray or black, although I've presumed gray from the evidence. I am considering the following and would appreciate any advice as to the approach:

A) Determine whether its the gray or black water by pouring water into the gray tank along with some red food coloring and then opening the cap to see if the collected water is red.

B) Replace only the valve that's leaking based upon the test results.

If I am reading the product information correctly, I can "splice in" a new 1.5 inch gray water valve to replace the existing one if in fact that's leaking.
  • Yes, it is a fairly easy task.
    Empty and flush tanks. Reempty and let drain good. It could be crappy job if you don't flush and drain tanks. You still may have some liquid left.
    Locate the valves.
    Have wrenches. Easy to use socket set either 1/4 or 3/8 drive and combination end wrench.
    Take valve 4 bolts loose.
    I use vaseline to hold the gaskets (2) in place. If you have some thin sheet metal like flashing material, it works good to hold gaskets in place. Slide valve assembly in to place and re-install new bolts that come with valve.
    Some rigs have very little slack in the piping depending on installation. Some it is easy to do both at the same time. Others doing one at a time works best.
  • The original equipment are two cable actuated valves. My dilemma right now is that one of those has been replaced with an aftermarket non-cabled valve, leaving the original gray water cable actuated valve.

    If I ask Camping World or Winnebago for replacement valves they are telling me to replace a complete assembly that includes two cable actuated valves and then a few feet of PVC piping. I would rather simply replace the two valves but Camping World and Winnebago aren't helpful in steering me to the right hardware.

    Is it as simple as buying one 1.5 inch and one 3 inch cable actuated valve from off the shelf at Camping World and installing them (without replacing the whole assembly between the valves)?
  • You may have a cable actuated waste valve like these from Valterra. It is possible that the cable has pulled loose.
    Valves
  • I agree with Bud, just replace both valves as they are not that expensive. Problem solved and move on to bigger things and enjoy RVing. Some things are to easily fixed and just not worth worrying about.
    Blessings; kdk
  • The valves are only around $15 if they are convertional with the cable control as an adder so why not replace them both while you are doing it.
    The valves are normally held in place with either 4 each 1/4 or 5/16 bolts.