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Old 08-25-2020, 06:12 PM   #1
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Dual drains

Decided last year to move up from Class C to a class A. Chose a Thor Windsport because it offered a pantry, king size bed, and a convenient floor plan. I never really checked out the holding tank draining system or I never would have bought this rig. Anyone out there had to run two separate lines to the clean out? Yep, one for grey and another for black. Dumbest RV engineering Iíve ever seen. If youíre in the market for a new or used rv, check out the dumping operation or you could be unhappy like me. Just sayin....
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Old 08-25-2020, 06:23 PM   #2
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They sell a Y connector to combine them easily. Initial setup will cost more. Most of the time we have our gray open until 2nd to last day. We usually do not dump black until leaving. So most of the time we would only have a single slinky deployed anyway.

RVs are all about floor plan. Relax and enjoy.
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Old 08-26-2020, 05:52 PM   #3
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Take a pic and couple measurements fellows will help you get what you need for single outlet.
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Old 08-26-2020, 06:22 PM   #4
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I hard plumbed mine together.....
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Old 09-04-2020, 06:42 AM   #5
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We had that situation in previous RV. I used an adapter on the gray drain to accommodate a garden hose and I found a sewer elbow that had a knock out that would accept the garden hose. It needs a garden hose double female fitting to work. The unit had a black tank flush system which enabled me to flush the 3" black hose. It was not the best system but worked easier than two 3" hoses. ( I may still have that systems fittings in my shed)
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Old 09-04-2020, 04:32 PM   #6
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Our previous MH had 1 1/2 baths with 2-grey and 2-black tanks. Front grey tank combined the kitchen and 1/2 bath sinks. Rear grey was for rear bathroom sinks and the shower. The two black tanks each had their own fresh water washout hookups. I thought at one time of getting a "Y" connector and two separate sets of sewer hoses, but I realized that would take more setup and teardown time than just using just a single sewer hose on the front then rear sets of tanks, plus I didn't want to deal with storing 4-sections of sewer hose. It didn't really bother me to have to deal with that on my previous MH, but boy do I appreciate having just the single bath on this one with one grey and one black tank.
Mike and Cindy
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Old 09-04-2020, 05:17 PM   #7
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First trailer we bought with a slideout had the sewer connection underneath the slideout.

Was a pain to get underneath if I needed to disconnect before my wife was done working inside and the slide was out.

From there on in the very first thing I did when shopping for a new RV was determine where the sewer connection was located!

Current RV has two gray and two black tanks that are all attached to one sewer drain connector. Monaco did it right!
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