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Post by Edd505 on Jan 26, 2018 11:31:18 GMT -5
This is my second RK and both had two separate places to dump tanks, one was black & bath gray the second was the kitchen sink. My G353RKT drains were far enough apart it took 4 hoses in a full hookup. At a dump station the 5W had to be moved to get the rear tank. After looking under I decided to join the two into a single location. The modification took a couple hours and about $30 in parts. Tools & parts : Parts 1) 3"x2" Y 1) 2"x1.5 adapter 2) 1.5" 45s 1) can ABS to PCV cement 20' 1.5" PVC  Black/gray Tank Drain  Kitchen Drain  continued to next post![]() |
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Post by Edd505 on Jan 26, 2018 11:51:18 GMT -5
First picture shows the 1.5" pipe joined to the front 3" ABS (black/bath gray & now kitchen sink gray. The pvc has to be routed around the spare and I added straps to the PVC using the frame where the insulation meets the frame. End result one common dump hookup, no more moving 5W or multi slinkys to reach. Cut 3" ABS and install 3"x2" Y add 2"x1.5 adapter to Y  route 20ft 1.5" PVC to Y just added, Cut ABS 1.5" kitchen drain, cut 20' PVC to length, install 2 1.5x45s  _ |
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Post by johnr on Jan 26, 2018 13:18:55 GMT -5
I hate to be "that guy" but from the back tank picture, it sure looks like the joint after the 90 degree bend goes uphill.
Looks like a really nice fix! I'm going to pass this on to my brother-in-law who has the same problem.
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Post by ronc on Jan 26, 2018 13:32:12 GMT -5
Looks like a creative solution that will work. I wonder why KZ didn't do this. Come to the Rally ... show them what you've done ... they may incorporate your design. None of us is as smart as all of us.
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Post by Edd505 on Jan 26, 2018 19:47:58 GMT -5
I hate to be "that guy" but from the back tank picture, it sure looks like the joint after the 90 degree bend goes uphill. Looks like a really nice fix! I'm going to pass this on to my brother-in-law who has the same problem. It all runs down hill but has a slight curve. (miss measured cuts on original ABS) If I were to do it again I would look at the long 1.5" 45s for a more sweeping curve. |
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Post by lynnmor on Jan 26, 2018 20:27:47 GMT -5
Looks like a creative solution that will work. I wonder why KZ didn't do this. Come to the Rally ... show them what you've done ... they may incorporate your design. The RV business is very competitive so just a few bucks more for time and materials rules out much innovation. Since the manufacturer cannot control how the product will be used or misused they must err on the side of caution. What am I talking about? Imagine that the sewer cap(s) were on and the dump valves were open or failed, an overflow would happen when traveling on hills resulting in serious damage. The pipes are likely hanging on the dump valves so it may be a good idea to add additional hangers to lessen the strain. Those valves aren't very strong and I have seen some that cracked for no apparent reason. For future reference, black ABS plumbing and cement is available at the big home centers. It is always best to use like materials. Maybe OCD on my part. I use sewer caps with the garden hose connection and run a 3/4" hose from the galley tank to the sewer. Of course this would not be a good solution at a dump station. link |
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Post by Edd505 on Jan 26, 2018 21:20:58 GMT -5
The RV business is very competitive so just a few bucks more for time and materials rules out much innovation. Since the manufacturer cannot control how the product will be used or misused they must err on the side of caution. What am I talking about? Imagine that the sewer cap(s) were on and the dump valves were open or failed, an overflow would happen when traveling on hills resulting in serious damage. The pipes are likely hanging on the dump valves so it may be a good idea to add additional hangers to lessen the strain. Those valves aren't very strong and I have seen some that cracked for no apparent reason. For future reference, black ABS plumbing and cement is available at the big home centers. It is always best to use like materials. Maybe OCD on my part. I use sewer caps with the garden hose connection and run a 3/4" hose from the galley tank to the sewer. Of course this would not be a good solution at a dump station. linkI added three hangers PVC pipe to frame. Parts from local plumbing shop who told me special cement is used for ABS to PVC, same size can but the cements green. (parts original post) |
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Post by RdRmr on Jan 27, 2018 20:33:42 GMT -5
Edd505,
I'm considering doing that as well on our 315RKD. Another "to do project". Can I ask why you used PVC instead of ABS? Just curious. Happy Campin....
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Post by Chuck on Jan 28, 2018 12:39:18 GMT -5
Our 384 already has such, so do not have to do this mod, I have a friend that has the same problem Edd had, he has been thinking about doing the same thing, have to show him Edd fix  Safe Travels Chuck |
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Post by Edd505 on Jan 28, 2018 16:18:01 GMT -5
Edd505, I'm considering doing that as well on our 315RKD. Another "to do project". Can I ask why you used PVC instead of ABS? Just curious. Happy Campin.... Plumbing shop only had PVC pipe & fittings and he told me ABS & PVC are dimensionally the same, that I needed a different glue but could use the same primmer. The PVC fit the ABS perfectly. Didn't mention I dry fit it all before gluing. I did end up with a slight horizontal curve when I cut the 3" ABS about an inch short. (Forgot to allow for the area goes inside the fitting) I thought of painting the PVC black but it's high enough up in the frame you have to almost be laying down to see it. |
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Chris RV Living
Seasonal RV’er
Starting to add Boondocking to our camping experience.....
Posts: 133
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Post by Chris RV Living on Nov 1, 2020 11:00:15 GMT -5
Edd505 - how much clearance did you have between the axle and the long run of drain pipe? We don't go "off road" with our trailer, but some campgrounds can be quite twisty and steep, and rutted, causing bounce. Wondering how much travel the leaf springs have, since my run on my CONNECT is from front to full rear of trailer (probably 15-20 ft of pipe) I will need to have very little slope to ensure plenty of clearance over both axles
It may even need to be horizontal until it makes it over the axle. Not a huge deal during the summer but difficult to drain completely for winterization (Tennessee)
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Post by laknox on Nov 2, 2020 10:37:06 GMT -5
Looks like a creative solution that will work. I wonder why KZ didn't do this. Come to the Rally ... show them what you've done ... they may incorporate your design. None of us is as smart as all of us. Why? 'Cause it'd cost them $5 more...  Lyle |
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Post by laknox on Nov 2, 2020 10:39:44 GMT -5
Nice job, Edd505!
Lyle
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Post by Edd505 on Nov 2, 2020 22:03:37 GMT -5
Edd505 - how much clearance did you have between the axle and the long run of drain pipe? We don't go "off road" with our trailer, but some campgrounds can be quite twisty and steep, and rutted, causing bounce. Wondering how much travel the leaf springs have, since my run on my CONNECT is from front to full rear of trailer (probably 15-20 ft of pipe) I will need to have very little slope to ensure plenty of clearance over both axles It may even need to be horizontal until it makes it over the axle. Not a huge deal during the summer but difficult to drain completely for winterization (Tennessee) I have not measured the distance but it is above the frames low edge. It is right against the under belly, I added plumbers tape (metal tape) every where it crossed a cross member. I did this in 2018, about a year after I got the 5W and long enough to know two dump outlets was a PITA. We are about 3/4 time when not locked down so the systems got many miles with no issues. |
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Post by rvcouple on Nov 21, 2020 15:22:47 GMT -5
I will have to look into re-plumbing, but in the mean time, I will also look at the water hose caps and just running a standard water hose from the forward kitchen cap to the campground sewer.
Right now I just connect the kitchen tank to the campground sewer since the better half doesn't want to worry about the kitchen backing up. When I need to empty the black or gray tanks in the rear, I swap the hoses to the campground sewer and drain both the rear tanks. That's usually right before we leave if on a weekend trip. I tried a Y connector once. Way too much trouble when you need to empty the black and your lines on the ground are full of gray water.
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Post by lynnmor on Nov 21, 2020 15:52:32 GMT -5
Did you see my post above describing a way to use a common garden hose for the kitchen? Using sewer outlet caps with a garden hose connection also allows draining gray tanks into a portable tank when camped with no sewer hookup.
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Post by Edd505 on Nov 21, 2020 22:34:29 GMT -5
Did you see my post above describing a way to use a common garden hose for the kitchen? Using sewer outlet caps with a garden hose connection also allows draining gray tanks into a portable tank when camped with no sewer hookup. Yep 2018 post and I have had one like this almost since I started RVing. I don't use to dump but it stays on at all times and the hose cap is opened first above the sewer hose that's already connected to the ground. No surprises, and the water goes down the hose not on the ground. I stayed at a CG in CO that let us dump to the trees, someone complained and the county health officer came by and said no, end of. Dumping gray water to ground : link
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Post by laknox on Nov 23, 2020 10:23:50 GMT -5
Did you see my post above describing a way to use a common garden hose for the kitchen? Using sewer outlet caps with a garden hose connection also allows draining gray tanks into a portable tank when camped with no sewer hookup. Yep 2018 post and I have had one like this almost since I started RVing. I don't use to dump but it stays on at all times and the hose cap is opened first above the sewer hose that's already connected to the ground. No surprises, and the water goes down the hose not on the ground. I stayed at a CG in CO that let us dump to the trees, someone complained and the county health officer came by and said no, end of. Dumping gray water to ground : link
Which is =really= f'n dumb, IMO. I mean, if you're tent camping, you wash dishes in a basin. Where does the water go? Out on the ground. You wash down, where does the water go? On the ground. Where do you pee and poop? On the ground. What f'n difference does it make if it comes out of your trailer? Frankly, where we camp, the forest can use all the water it can get! No, I'm not talking about dumping the black tank, though, in an emergency, I'd have zero qualms about doing so. Lyle |
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Post by Edd505 on Nov 23, 2020 19:54:47 GMT -5
Yep 2018 post and I have had one like this almost since I started RVing. I don't use to dump but it stays on at all times and the hose cap is opened first above the sewer hose that's already connected to the ground. No surprises, and the water goes down the hose not on the ground. I stayed at a CG in CO that let us dump to the trees, someone complained and the county health officer came by and said no, end of. Dumping gray water to ground : link
Which is =really= f'n dumb, IMO. I mean, if you're tent camping, you wash dishes in a basin. Where does the water go? Out on the ground. You wash down, where does the water go? On the ground. Where do you pee and poop? On the ground. What f'n difference does it make if it comes out of your trailer? Frankly, where we camp, the forest can use all the water it can get! No, I'm not talking about dumping the black tank, though, in an emergency, I'd have zero qualms about doing so. Lyle I totally agree. We go to a few here in the desert have circle dams at the base of trees to hold the gray water. Worst part the CO campground was River & Woods right on a river with wooded sites or a big open field. Had to be a tree huger complained we might contaminate the tree or river. BTW I go the same place a bear does when I'm hunting. |
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Post by laknox on Nov 24, 2020 13:32:05 GMT -5
Which is =really= f'n dumb, IMO. I mean, if you're tent camping, you wash dishes in a basin. Where does the water go? Out on the ground. You wash down, where does the water go? On the ground. Where do you pee and poop? On the ground. What f'n difference does it make if it comes out of your trailer? Frankly, where we camp, the forest can use all the water it can get! No, I'm not talking about dumping the black tank, though, in an emergency, I'd have zero qualms about doing so. Lyle I totally agree. We go to a few here in the desert have circle dams at the base of trees to hold the gray water. Worst part the CO campground was River & Woods right on a river with wooded sites or a big open field. Had to be a tree huger complained we might contaminate the tree or river. BTW I go the same place a bear does when I'm hunting. Really. In the past, I've asked greenie-types if they carry a toilet with them when they tent camp. Answer is usually a confused "no", then I say WTF difference is it if I dump my grey water in the forest. It's NOT "sewer" water. Usually leaves them speechless, or I get a "but that's different". My response is usually, "if you can't tell the difference between dish and bath water and sh!t water, then I don't want to camp anywhere near you". :-) Lyle |
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