Kitchen Sink Hepvo Install - Escape Trailer Owners Community

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Old 02-16-2018, 01:11 PM   #1
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Kitchen Sink Hepvo Install

I was never too happy with the ABS piping for the kitchen sink in my 2017 21'. The trap drain fitting was located where it was hard to empty without dumping water behind the paneling in the bottom cabinet. It seemed to take up a lot of space that could be used for storage. But more important than all these, the sink never seemed to drain well - if I turned up the faucet too high, the sink would flood.

After looking at the installation, I found that there should be a vent on the piping and there are a total of six 90 deg bends in the piping impeding the water flow. So I decided to fix it. As a Hepvo valve doesn't need a vent and only uses two 90's, that seemed the way to go.

I cut out the old piping (pic 1), then cut out a new hole in the shelf for the Hepvo pipe routing, glued a ABS to SJ transition to the pipe going to the grey tank, and installed the plumbing. I used rubber seals (like green one shown in pic 1) on all the connections - the plastic seals that some of the fittings come with seem to have leakage problems that the rubber ones don't.

The finished product is shown in pic 2 and 3.

The wife is happy with the increased area under the sink and the water properly drains. The only thing left is fill that hole in the shelf that the old piping went through.
Attached Images
File Type: jpg Old sink drain.jpg (336.6 KB, 131 views)
File Type: jpg Hepvo sink drain 1.jpg (227.4 KB, 154 views)
File Type: jpg Hepvo sink drain 2.jpg (214.6 KB, 140 views)
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Old 02-16-2018, 01:34 PM   #2
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Nice, really nice! Wish I could hire you to do mine. I've stared at it until I'm blue in the face. I guess I'm just worried the glue will setup before everything is lined up properly. Sigh.
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Old 02-16-2018, 01:40 PM   #3
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There is only one glued connection in my installation - the ABS to SJ transition fitting. All the rest of the fittings are slip joint fittings (SJ) and allow a lot of latitude for fit-up. SJ piping is available in 45's, 90's, straight - all the fittings you should need to run your piping. Also, don't worry about using SJ fittings - they are standard for sink plumbing. Take a look under any sink in your house and you will see SJ fittings.
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Old 02-16-2018, 01:47 PM   #4
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Now you've done it! Another thing to add to my mod list.

Seriously, very nicely done and well planned.
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Old 02-16-2018, 02:14 PM   #5
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I have installed a lot of Hepvo valves with no issues. Last spring I installed one to resolve my E-21 bath/shower drain issues with no problems. ETI tried using the Hepvo valves on the bath shower drains but complained of leaks. I replaced my kitchen sink last summer and ordered and used a Hepvo valve like in this thread. I too had leaking issues with the new valve. I pulled the valve connections apart and found the black rubber connection seals were dry. I lubed the rubber seals with silicone paste and no more leaks. For some reason the new valve seals are not being lubed. I recommend checking your connection seals for lubrication and if dry lube the seals in your new Hepvo valve. It will save you a little frustration when checking for leaks. BTW, this is a great mod.
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Old 02-16-2018, 04:46 PM   #6
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tom...Tom...TOM!!! I am all over this mod. Maybe Dave and I can do this at the Bluebonnet Rally. Are you going?


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Old 02-16-2018, 06:01 PM   #7
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Like the space it creates but $54 on Amazon.ca is a little hard to justify for a plastic tube if everything is working fine...we will see.
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Old 02-16-2018, 06:56 PM   #8
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Quote:
Originally Posted by Eggscape View Post
Like the space it creates but $54 on Amazon.ca is a little hard to justify for a plastic tube if everything is working fine...we will see.
IF you're still interested, I found this: Contact Drainmaster regarding HepvO

Send a message and maybe you'll find out where you can buy it either locally or a weblink in Canada.
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Old 02-16-2018, 08:37 PM   #9
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Little House Customs sells them for $26.50 & shipping.
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Old 02-16-2018, 08:41 PM   #10
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Tom,
Very nice mod. Do you have to use any special tool to cut the lower port of the black pipe? It appears that there is no room for a saw to reach the corner of the cabinet to saw the pipe off. Please give advice to perform this tricky task. Thanks.

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