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Old 01-12-2011, 06:22 PM   #1
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09 American Allegiance/Fleetwood kitchen sink drain problem

My 09 coach has he kitchen in the curb side slide out. The sink drain plumbing goes down the wall , then goes across to the other side of the coach to empty into the gray water tanks.

The flexible 1 1/2" hose extends from the slide out wall to approx center of the coach--this is where the problem starts. When the slide out is closed the hose gets pinched between the slde out and the coach frame.
I have changed out three hose that were leaking water into a plywood cover then into the lower bay. I have tried re-routing etc but no desired fix at this time. Fleetwood was contacted--still waiting for info. Does anyone else have this problem ? If so what did you do to correct the problem?
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Old 01-12-2011, 08:32 PM   #2
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I have an 09 Allegiance also, and can't help you with that problem, but I did learn something about our plumbing/draining system the other day. The D/W was doing some laundry and I noticed the shower filling up with water. My washer is plumbed into the gray tank!
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Old 01-13-2011, 07:57 AM   #3
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When plumbing an RV the plumbing drains are to drop 1/4 inch per foot for drainage. I have seen what is called a (PoP Vent) Installed in the drain line. The vent should extend 6 inches above the drain line to allow air to get into the line and help drainage. A good repair shop or dealer can install these.

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Old 01-13-2011, 08:33 PM   #4
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Quote:
My washer is plumbed into the gray tank!
Isn't that what you would expect? Afterall, it is "gray" water.

Some unvented washers are plumbed direct to the outlet pipe and not to the tank at all. That's because they consume a lot of water to dry without venting, so they are usable only when a sewer hook-up is available. For that reason, the unvented type of washer/dryer has pretty much fallen out of use.
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Old 01-14-2011, 02:10 PM   #5
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Quote:
Originally Posted by duncan1 View Post
When plumbing an RV the plumbing drains are to drop 1/4 inch per foot for drainage. I have seen what is called a (PoP Vent) Installed in the drain line. The vent should extend 6 inches above the drain line to allow air to get into the line and help drainage. A good repair shop or dealer can install these.

Duncan1
How strange, I thought it was called an air admittance valve (AAV), Studor valve/vent, Cheader valve (what we always called them) and some folks who mishear call it a "cheater" valve. They are usually put in houses where the wet vents are too far away to properly vent a washing machine or, more commonly, a dishwasher. That is why you often find them in the plumbing section next to the dishwasher hookups and why the packages tend to say "dishwasher vent".

This is what they look like
Shop Keeney Mfg. Co. Studor Mini-Vent Plumbing Vent at Lowes.com

Shop Keeney Mfg. Co. Black Plumbing Vent at Lowes.com

http://www.homedepot.com/h_d1/N-5yc1v/R-100148694/h_d2/ProductDisplay?storeId=10051&keyword=dishwasher+ve nt&jspStoreDir=hdusΝ=P_PARENT_ID&navFlow=3&catalog Id=10053&langId=-1&ddkey=Search

And for those of you who must have all things shiny, you can often get them in a shiny chrome finish as they are often placed on top of a sink. It's an easy install unless you are all thumbs and shouldn't be allowed around anything involving manual labour.
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Old 01-15-2011, 10:38 AM   #6
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The plumbing code now requires air admittance valves in most new construction. There are exceptions to the requirement, but most late model RVs and recently built housing will have them at every sink.
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Old 01-15-2011, 02:59 PM   #7
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Originally Posted by Gary RVRoamer View Post
Isn't that what you would expect? Afterall, it is "gray" water.

Some unvented washers are plumbed direct to the outlet pipe and not to the tank at all. That's because they consume a lot of water to dry without venting, so they are usable only when a sewer hook-up is available. For that reason, the unvented type of washer/dryer has pretty much fallen out of use.
Our W/D is the standard (not stacked) vented Splendide. My experience in other RVs is that the washer is plumbed directly to the drain line. As noted, that does requires a sewer hook up.
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Old 01-15-2011, 02:59 PM   #8
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Quote:
Originally Posted by Gary RVRoamer View Post
The plumbing code now requires air admittance valves in most new construction. There are exceptions to the requirement, but most late model RVs and recently built housing will have them at every sink.
Fleetwood was putting them in the RV's back in the 90's
But maybe that is late model's?
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Old 01-16-2011, 08:36 AM   #9
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I guess the housing and comercial building industry call this valve an AAV . I checked some of the bill of materials from 6 different purchasing agents and all call it either PoP valve or Relief valve. I guess its just and RV manufactureing term....
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Old 01-16-2011, 09:19 AM   #10
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I'd say the valves have been in use in RVs for at least 10 years and even longer in Fleetwoods.

A Pop-off valve is a pressure relief valve, e.g. on a water heater. Not the same thing as an air admittance valve or anti-syphon valve.

Air Admittance Valves
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