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Old 07-14-2019, 07:23 PM   #1
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Join Date: Apr 2018
Location: saco
Posts: 5
using the 3rd Unused gray tank

My Jayco Eagle 330 RSTS came with the washer/dryer "option". Among other items, the option consisted of a third 32 gal. gray water storage tank with it's own level monitoring system, etc. But, normally, if you don't install the washer, the extra gray tank goes unused.

On one camping trip we had filled both grey tanks unusually early, likely because of the two grandkids we had in tow that weekend. I was getting ready to pick up stakes to drag the camper to the dump site. A real pain, but what could I do? The kids did not want to go home a day early!!

I then remember I had installed a gate valve on the output coupler (where the sewer hose normally connects when draining the tanks). I had done this on every camper I had previously because the pull cable connected valves eventually don't close fully for one reason or another and I would have a leak problem without this extra valve. It was then I realized that if I kept this gate valve closed and opened up all the grey tank pulls, I would then effectively have all three gray tanks tied together. They would all then fill together to the same level, and now I have an extra 32 gallons of grey water storage!!! ...96 gallons total! We managed to get through to the next day with the extra 32 gallons!

I bet a lot of people are driving around with and extra gray tank never to be used!!
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Old 07-14-2019, 08:18 PM   #2
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Join Date: Oct 2018
Location: Cheyenne
Posts: 708
I only have two tanks. I do this with the bathroom and kitchen one. Works great, the bathroom always fills up faster really helps on the longer stays.
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