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05-21-2019, 05:02 PM
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#1
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Junior Member
Join Date: Jul 2014
Posts: 18
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Which One? Sewer Wye or Tee?
Just found out the new trailer I am looking at has two dump valves. So . . . I'm gonna need 2 sewer hoses. Does anyone have input on using a sewer wye over a sewer tee. Any pro's or con's to either one please.
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05-21-2019, 07:22 PM
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#2
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Senior Member
Join Date: Feb 2019
Location: Wickenburg
Posts: 3,271
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I looked at it this way: one of those valves is nothing but gray water, and you only need the giant hose for black water. The giant hose is awkward, so why deal with two?
I outfitted the gray-only valve with a bayonet cap that had the additional garden hose connector, and got myself a red gray-water hose for that valve.
Then I bought a new Prest-o-fit blue elbow (an item which I've used for years and swear by) and a male bulkhead garden hose fitting (image). I ported the elbow on the side (where it's a bit off the ground no matter what side of the elbow is down) and installed the hose fitting. (I had to caulk the inside, as the inside surface is a tad Escher).
When I overnight and won't be dumping the forward gray tank, I cap the hose fitting with a brass hose cap. When I am staying for a while and want to hook everything up, I put a female-female hose connector on the elbow and run the red hose to it.
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2019 Cougar 26RBSWE
2019 Ford F-250
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05-21-2019, 07:59 PM
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#3
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Senior Member
Join Date: Aug 2018
Location: Lake Stevens
Posts: 764
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Quote:
Originally Posted by brandonld
Just found out the new trailer I am looking at has two dump valves. So . . . I'm gonna need 2 sewer hoses. Does anyone have input on using a sewer wye over a sewer tee. Any pro's or con's to either one please.
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I think the Y provides more options/flexibility. Our Laredo 225MK has the black tank and one on the grey tanks behind the axles. The other grey water tank is ahead of the axles. If you have a long run, it is better to just do that with one hose. I have four sections of hose and two of the accordion hose stands. Seems to work out fine. I store two of the hose sections in the rear bump. Everything else goes in the pass thru. Chris
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2019 Laredo 225MK for travel. Bighorn 3575el summer home in Washington, Park Model with Arizona Room for winters.
2015 RAM 3500 SRW CC SB Aisin Laramie
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05-22-2019, 02:28 AM
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#4
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Senior Member
Join Date: Oct 2014
Location: Germantown, TN
Posts: 6,309
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While Ihaven's idea and use of the 5/8 hose to drain the grey tank seems fine at face value, keep in mind that unless your rig has a grey water flush then the build-up of 'settlement' will not be properly removed from the grey tank. It is not a good idea for a permanent install. We too have a cap with a garden hose fitting and have drained grey water away from the RV in a pinch, but it is not a good idea overall. YMMV
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Jim in Memphis, Wife of 51 years is Brenda
2019 F450 6.7 Powerstroke
2018 Mobile Suites 40RSSA
2021 40' Jayco Eagle
2001 Road king w/matching Harley sidecar
2021 Yamaha X2 Wolverine 1000
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05-22-2019, 02:47 AM
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#5
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Senior Member
Join Date: Mar 2015
Location: Southeastern Connectiut
Posts: 1,305
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I would go with the "Y" fitting. My reasoning is based on a quick and unobstructed dump of your Black Water, and then a good flush of your Grey Tank.
A 45 degree route is, in my opinion, better than a 90. You will already have one 90 where you go into the ground. A second 90 would slow solid things down
Good Luck,
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Pull Toy
Steve & Jan, Ava & Emma (Mini Schnauzers):
2016 F350 Lariat 4X4 Powerstroke CC/SB "PULLTOY V"
2013 Alpine 3535RE "MAGIC CARPET IV"
Proud Navy Vet!
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05-22-2019, 05:12 AM
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#6
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Senior Member
Join Date: Feb 2014
Location: radium hot springs bc
Posts: 2,007
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I basically do what Snoking does with the exception of leaving the galley grey tank valve open. This has to left open because when Keystone built this particular model they thought the purchasers would all be members of "Cirque du Soleil". What the hell were the designers (can't call them Engineers) thinking!
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2018 Ram 3500 6.4 Harvest Edition
2018 Cougar 27RESWE
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05-22-2019, 05:44 AM
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#7
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Senior Member
Join Date: Aug 2013
Location: Tucson
Posts: 822
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I'd use the "Y" for flow reasons stated. Our Raptor 353TS has the back grey water routed to the forward dump line. So the rearward dump line is the back black tank only.
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05-22-2019, 06:14 AM
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#8
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Senior Member
Join Date: Mar 2019
Location: Milwaukie, OR
Posts: 1,389
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I also had 2 valves to contend with on my last 5er. I used the "Y" junction. Worked great.
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Jeff & Sandi (and Teddy - 7lb Schnorkie)
2018 Montana High Country 305RL
2015 RAM 3500 Crew Cab 4x4 DRW
Demco Recon Hitch on RAM Puck Ball
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05-25-2019, 04:30 PM
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#9
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Junior Member
Join Date: Jul 2017
Location: Sierra Vista
Posts: 29
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Our 5th wheel has two dump lines, and we use a wye adapter to minimize any effluent flow restrictions. Two years and counting, and we haven’t had any concerns or issues...[emoji41]
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05-25-2019, 06:30 PM
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#10
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Senior Member
Join Date: Apr 2012
Location: Portland, OR
Posts: 4,180
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Personally I would look at re-plumbing the drains to one under the trailer.
Our rear kitchen grey tank drains forward to the dump valve, one hose connection.
Yes, it is a bit of work to do, but only once then you are at a single hose.
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Russ & Paula and Belle the Beagle.
2016 Ram Laramie 3500 DRW 14,000# GVWR (New TV)
2005 Copper Canyon 293 FWSLS 32’ GVWR 12,360
Visit and enjoy Oregon State Parks
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05-25-2019, 07:56 PM
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#11
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Senior Member
Join Date: Nov 2017
Location: Picacho, Az
Posts: 6,809
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I'd recommend the Y & connect the 2 dumps as close as possible for better draining. Also with the T some sewer connections are below ground or in some sort of containment that the huge connections on the T would not fit.
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Full-timed 10+ years
Sold '13 Redwood FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
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05-30-2019, 04:11 PM
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#12
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Junior Member
Join Date: Jun 2016
Location: Taos
Posts: 17
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I use a Wye
I cut two short lengths of sewer hose to come off the
Outlets. They meet at the Wye on a block. Then I run a hose to the sewer inlet. I always drain and flush the black tank first so the galley and gray (in that order) contents rinse the longer hose prior to storage for travel.
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05-31-2019, 03:56 AM
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#13
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Junior Member
Join Date: Aug 2014
Location: Hazel Green, AL
Posts: 7
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Sewer Hose
I too use a Sewer Wye because I having 2 dump valve locations on our Laredo FW. It works great. The dump valves are about 15 foot apart from each other. So I installed the 45 degree clear adapters on both on valves, then connect sewer hose extensions to them and they connect to the Sewer Wye. I've learned to make sure the Wye fitting is angle little down hill where the final sewer hose connects to ensure good flow. Easy to clean and maintain.
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