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Old 07-05-2020, 10:30 AM   #1
Cjblodgett
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Join Date: Jun 2020
Location: Morgan Hill
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2521 Passport hidden sewer tubes-need modification advice

We just bought a 2020 2521 RLWE travel trailer. One complaint is the sewer system seems "hidden", so that you need to practically crawl under the rig to hook the sewer hoses for black/gray and galley. I am too old to get on my hands and knees and frankly...yuck.

I attached a 90 degree swivel and that may work. Has anybody tried this?

I also am wondering if I am able to attach a hose to each with a y-connector in this configuration. Would that be right?

When dumping tanks, do I need to disconnect one to drain the other to prevent back flow?

And lastly, I have read about the Valterra electric valves (or extenders?) for the levers.... any ideas on that?

Thanks for any advice.

Cj
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Old 07-05-2020, 10:50 AM   #2
Bill-2020
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I’m not sure about those 90s. They make 45s that may better suit your needs. The y looks ok, hook up like that. You shouldn’t get any back flow, just open one valve at time. Black first, empty it, flush it, close the valve and then open the gray. Those pipes are where the factory intended them to be.
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Old 07-05-2020, 11:19 AM   #3
Bill-2020
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Check out this as well if you need the extra length.

https://www.amazon.com/Camco-39572-C...976687&sr=8-15
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Old 07-05-2020, 11:43 AM   #4
JRTJH
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I would start with a terminal valve on both ports, follow that with a 45 degree fitting and follow that with a 3.5" clear fitting and a "hose cap with a garden hose fitting built in" on both. That should put your sewer connection "at or very near the trailer edge (don't go past it, bushes in campgrounds can rip lots of expensive plastic stuff off trailers). The reason for the terminal valve is to prevent "sewer splash" or "poonami showers" if a main valve leaks... No matter the quality or cost of the valve, toilet paper, a flushable wipe or even a bit of construction debris can (and usually will) find its way to the valve to cause it to leak at the most inopportune time.

Connect your "Y" sewer hoses and go from there. No need to disconnect or try to prevent "backflow". keep a "down grade level" from trailer fitting to campground fitting and you'll be OK.

The way your tanks are plumbed, start by dumping the black tank. When it's empty and as clean as you plan, close that valve, move to the galley tank (next most dirty) and dump it, then close that valve, then move to the bath gray as the last tank to dump. That rinses the hoses with the "cleanest dirty water"....
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