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RVing message boards => Motorhomes => Topic started by: steve407 on October 05, 2017, 01:16:43 PM

Title: Set up more or less permanent
Post by: steve407 on October 05, 2017, 01:16:43 PM
We have always used our RV in the normal "go camping on the weekend or for a few days" mode and then put it back in storage. We have now leased a lot at an RV resort to park it for a year. My question is about the black and grey water -- Do I just leave the valves in the open position or should they be closed and tanks emptied as needed?  I'm worried if I just leave the valves open, sewer smell will come in and that the tanks will begin to "crud" up from not being flushed out like I do in normal tear down. What are the issues with all this?

Thanks in advance

Steve
Title: Re: Set up more or less permanent
Post by: kdbgoat on October 05, 2017, 01:29:31 PM
When parked long term, I ensure I have a trap formed in my sewer hose, and leave the gray tank open. I leave the black tank closed until I'm ready to dump it. DW and I go a week with no problem on the black. A day or so before I dump the black tank, I will close off the gray and use the gray water to flush out the sewer hose after dumping the black. There are some that will also keep their gray closed until they need to dump it, and there's nothing wrong with that either. Whichever works best for you. Never leave the black open. All the liquids will run right out, and the solids will stay in the tank, eventually causing what is know as a poop pyramid.
Title: Re: Set up more or less permanent
Post by: Rene T on October 05, 2017, 01:32:19 PM
Agree. The only think I would add is that you shouldn't get any gray tank smell because you have traps in the sinks and shower/tub.
Title: Re: Set up more or less permanent
Post by: steve407 on October 05, 2017, 01:38:31 PM
Thanks.  It is what I had assumed would be the answer but wanted some other opinions. We'll go with closed and dump as needed!
Title: Re: Set up more or less permanent
Post by: kdbgoat on October 05, 2017, 02:06:37 PM
You're welcome. Enjoy the extra time you get to spend rv'ing!
Title: Re: Set up more or less permanent
Post by: Rene T on October 05, 2017, 02:12:29 PM
Happy dumping.   :o ::) ;D :))
Title: Re: Set up more or less permanent
Post by: Lou Schneider on October 05, 2017, 02:17:34 PM
After you dump the black tank and close the dump valve, add some water through the toilet so the dump valve stays wet.  Or add some RV antifreeze if you're leaving the rig in freezing weather.

As long as the dump valve remains wet, any crud on it will remain soft and pliable and the valve will work as it should.  Most dump valve problems happen when the normal crud buildup dries up and hardens, causing the valve to jam and tear up the seals when you operate it.