Forum Discussion

popeyemth's avatar
popeyemth
Explorer
Mar 19, 2014

Water tank drain improvement

Our Coachman TT came factory with only a plug in the tank bottom shown in the picture it's the black plug in the center of the pic.



To sanitize the tank for Spring, one must crawl under the camper, install plug removed to drain for winter, fill tank with water and bleach solution ,crawl back under and remove plug to drain,crawl back under in the wet spot and replace plug, refill tank, crawl BACK under in the wet spot to remove plug to flush bleach from tank,crawl BACK under to reinstall plug! WAY too much trouble.



Simple to add a couple of fittings and a 1/4 turn valve to do all that from outside.
Here are the parts:



Not shown is the clamp to attach valve to frame. One could use a Beam Clamp and a pipe hanger(no frame holes) or bolt a clamp to the frame or to somewhere else under the lip of the camper body. That depends on your preference and layout.
Also not shown is the electrical tape I wrapped the clear hose(what I had on hand) to keep all sunlight from the water line thus no algae growth.
Good Luck, Mike
  • Couldn't believe my eyes at such a poor setup from such a good company.
    Can't imagine what they where thinking other than saving 3 cents per unit.
  • Luckily our fifth wheel, which is not top of the heap, came with a drain valve between the axels so one does have to stretch a little to reach it.
  • Ron3rd's avatar
    Ron3rd
    Explorer III
    Mike, I've never seen a rig with just a plug on the bottom of the tank. I've only seen the little petcock type setup. Nice mod btw.
  • I would have thought twice about this camper had I realized how poorly this was designed and executed.
    Now I wonder about every thing else I haven't thoroughly looked at.
  • I see that the supply is an inch or two above the bottom of the tank. If you want to use all the tank capacity, attach the supply to the drain hose and plug the original hole.
  • Lynnmor wrote:
    I see that the supply is an inch or two above the bottom of the tank. If you want to use all the tank capacity, attach the supply to the drain hose and plug the original hole.


    Now that you've got me thinking about that I might Tee the two together with a valve between for use as an emergency supply.
    Thanks,Mike
  • 1 1/2" to 2" drains are common now. A prior owner must have messed that one up.
  • At the last RV show, I found that Nash has a 1 1/2" drain and a T-handle for emptying the fresh water tank. Empty in seconds... I suppose retro-fitting one is out of the question though.