Wet Bay Valve replacement 01 Magna

[JRadtheNoMad]

Well, I have a drip... I'm dry camping at a state park, something I rarely do. Discovered that my catch cover is filling up with black tank stuff. Before I dig in, has anyone dealt with this before? My gray and black valves come together to a union and both exit through the same pipe (a "common" diesel pusher set-up). I'm going to change out both old valves and need to know if they are different sizes? Are the just generic valves or are they CC specific, you know $100 more than the next one.. and any worthwhile knowledge from someone who has been where I'm going...

[dons2346]

They are different sizes but I don't remember the exact size. Not CC specific sizes, plain old Valterra valves unless you have the electric dump valves. Get the ones with the metal handle as the plastic is easy to break.

[Tortise49]

I had the exact same problem with my ‘06 Inspire. The black valve was also getting a little hard to open and close along with the drip. I was going to replace the valves when I read in a forum about solving a similar problem by lubricating the valve stem. Sounded crazy but I thought it was worth a try. Squirted WD40 at the thing instantly making it easy to open and close, and the drip stopped. I guess the valve wasn’t seating completely because the stem was sticky. Felt like I dodged a bullet because I wasn’t looking forward to the valve replacement.

[a250gpguy]

I replaced both of ours in our 2005 Magna during our first trip at Tom Sawyer campground in Memphis. Took a few hours.

Be sure to dump tanks first!

You should be able to measure the housing size. Its a common Valterra product and its actually easier to replace both at once due to the interference fittings.

A little bit fiddly but easy to replace with common hand tools and as others have said..get the metal handled version as they are much better quality.

Only gotcha in the whole process is to be sure you don't pinch or split the rubber o-ring slide valve gaskets.

Makes for much piece of mind and a dry dump pipe!

Good luck
Chris and Nadia

[JRadtheNoMad]

Well after pinching the smaller gray rubber gasket three times, with the aide of some silicone and a new gasket from Amazon. Both black and gray tank valves have been replaced successfully and no drips!. I examined the old gaskets and believe that after twenty plus years, they may have gotten a little hard or lost their elasticity. I took some advice on lubing the actual handle rods as well and it will be on my lubrication points list. Thanks for the help everyone!

[Wrapped]

Glad you got it fixed, my 2 cents for future maintenance if I see anything in drip cap I rinse tank thoroughly then with drip cap on I pour toilet seal conditioner in toilet with pedal down and let soak back of valve seal then open valve with cap on it will treat both sides of seal.

[Stonefish]

Commen 3” Valterra blade valves on my coach. Drain tank(s) obviously, and I had to use a 2x4 to wedge between tanks to get a little daylight to remove old and replace. Pretty straightforward. Carry on.