Holding Tank Terminations

Lot's of guessing going on here. It didn't happen without pics as often gets said on here. Merry Christmas everybody.

I completely agree with you Huntindog! That's the very thing I told my coworker.

My apologies for the mis-spelling Huntindog. Blasted Autocorrect!

I'll not argue semantics here. Prowler messed up and it's responsible for the correction, bottom line. Regardless of who opens what when, Prowler has the responsibility.

See the note from jpmyers above. The plumbing is installed incorrectly.

It does not matter if cap is removed or not. If the gray valve is opened first with the black valve closed nothing will come out, and both tanks will be connected to each other. Levels will equalize, and nothing will come out of the dump hose.

And accidents do happen. I don't assume life is perfect. I have seen the disaster where someone removes the cap when the valves were not closed, and the tanks were full.

StarkNaked wrote:
There is nothing stopping someone from putting the plumbing together like this.

But... If the black tank is full, and the gray tank is empty, and the gray tank valve is opened, it means that the black water would back flow into the gray tank until they are both at the same level. So, half of the black water would be in the gray tank. Doesn't sound like a good thing!

Now before someone says you should never open valves in that order, never underestimate the possibility that it could happen.

IF the black tank works as normal, there is no way unless you did not take the cap off and put the dump hose on, could back flow into the gray tank

jpmyers wrote:
I've got this worked out. The Black Tank valve is on the outlet of the Y both tanks are connected to. The gray tank and it's associated valvesis on the lateral inlet of the Y and the Black tank is direct piped to the straight inlet of the Y. Simply stated, The "Craftsmen" at Prowler put the wrong person on "TANK-PIPING" that day.

Thanks for reporting back. Yes, messed up for sure.

The next hope is, the dealer will work with Prowler to get a warranty claim made and the mess fixed.

If your friend ever wants to camp with on board tanks only, for more days in a row then the grey tank can hold, (which is common the grey will fill first) they often need to dump the grey part way though the trip.

And if they need to drain some gray water into a blue tote (a dump transfer tank), they are messed up having to dump the black first which could have waited until you break camp. That is, if the dump valves are left in that odd ball configuration.

When we boondock, the 2 of us can get 8 days on the black tank and most always lasts until we break camp. I do camp choirs often and drain some grey water out every few days as it will be full well before we break camp. I leave the black tank alone. This partial grey dumping give me options, and leaving the black alone is better to have more water in the black tank when black dump time comes. I do not have to deal with the black until I want to. Loosing that feature of simplistic-ness of my choice is not good.

It never ceases to amaze me the lack of proper QC on campers before they ship. Something so simple, so screwed up.

Thanks for reporting back.

John

I've got this worked out. The Black Tank valve is on the outlet of the Y both tanks are connected to. The gray tank and it's associated valvesis on the lateral inlet of the Y and the Black tank is direct piped to the straight inlet of the Y. Simply stated, The "Craftsmen" at Prowler put the wrong person on "TANK-PIPING" that day.

I wonder if he is confused in the instruction that he got during his PDI . They probably said open the black tank first before opening the grey tank , he not realizing they meant drain the black and then shut the valve before grey tank ?