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Old 10-02-2017, 08:17 PM   #1
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Plumbing on Tiffin Products

Hello, Does Tiffin recommend any particular drain cleaning chemical for use in their products. My Bathroom drains have really become slow. Do now want to use just any product. Thanks in advance. Dennis Mattson
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Old 10-03-2017, 06:02 AM   #2
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Originally Posted by DennisJM View Post
Hello, Does Tiffin recommend any particular drain cleaning chemical for use in their products. My Bathroom drains have really become slow. Do now want to use just any product. Thanks in advance. Dennis Mattson
On my 34TGA there is not enough room under the shower for a traditional P-trap, so Tiffin used what I call a "duck-bill" drain valve to keep fumes from coming back up the drain. It is a rigid housing that has a short piece of very floppy hose inside. The end of this hose collapses on itself, so water and fumes can flow out, but not back in. Hard to explain ... you might have to Google it for a picture. It tends to clog up. Water is slow going out and sometimes fumes leak back in. Do not use any kind of mechanical drain snake or you will destroy this valve and getting under the shower to replace it would not be fun. Also, any chemical that creates a lot of heat would probably damage the plastic plumbing. In our motorhome I think the adjacent sink drain also flows through this valve, but I'm not certain of that.

To clean mine, I poured half a box of baking soda into the shower drain, then I poured hot vinegar in as fast as I could. I slapped an old rag over the shower drain and held it down. This forced the volcano through the drain valve and into the holding tank. The drain has worked fine ever since.
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Old 10-03-2017, 07:02 AM   #3
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"To clean mine, I poured half a box of baking soda into the shower drain, then I poured hot vinegar in as fast as I could. I slapped an old rag over the shower drain and held it down. This forced the volcano through the drain valve and into the holding tank."

X2 Our kitchen sink needs it more frequently...
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Old 10-03-2017, 08:52 AM   #4
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Unless you are dumping grease down your drains or have someone in the family that sheds lots of hair, you shouldn't have a problem. I'd look for a hair jam first. After that, the only thing that slow down drains is a plugged roof vent. Check your vent pipe on the roof - if critters get in, they can build a nest and plug it up.
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Old 10-03-2017, 06:01 PM   #5
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If you are concerned with using chemicals to force fluid through the line here is an option. Get an old style plunger, take out the handle drill a hole through the plunger a little smaller that the male end of a garden hose put the hose in the hole position the plunger over the drain and turn on the water. You will either clear the clog or shoot water out the vent on the roof. Richard
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Old 10-11-2017, 09:35 PM   #6
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There is another possibility causing slow drainage issues. Sagging drain lines. We recently had this issue in a newer Tiffin coach. Once the drain lines were repositioned and tied up properly, slide travel checked for clearance etc, no more slow drains.
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