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Old 04-20-2016, 07:28 PM   #15
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1986 34' Limited
1966 24' Tradewind
Conifer , Colorado
Join Date: Jun 2009
Posts: 2,518
I purchased my new gray and black water tanks from Inca Plastics. They took my order and delivered as promised. Download their on line catalog and see if they don't have the mold to make the tank you need.


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Old 04-20-2016, 10:38 PM   #16
2 Rivet Member
1970 23' Safari
Torrance , California
Join Date: Nov 2014
Posts: 20
Tank repairs

I did some research a while back and came across this product:

INSTA Holding tank repair
Bonds to all types of plastic

Made/Distributed by SR Specialty Recreation

Made in the USA (YEAH!!)

Part number IP48

The patch is 4x8 inches, I think there may have been other sizes.

I ordered it through the local RV supply house in my area (not Camping World).

I contacted the company and spoke with them about the ability of their product to adhere to the "slippery" plastics and was assured that it would perform well.

I followed the directions and cleaned the area for the patch really well. First with water and cleaner to remove the dirt and let it dry. Went back with lacquer thinner and cleaned it twice...I wanted it to really stick

Heated the area slightly with an industrial heat gun until just warm to the touch and applied the patch and rolled it well with a J-Roller (used to roll down various things in the building trade.

It has been holding on the top of my black water tank for over a year with no leaks, of course there is NO pressure to speak of on the top of the tank.

This saved me having to cut all my water lines to remove the tank. I did remove the toilet and the rotted support wood that caused the tank to flex when someone sat on the toilet leading to the crack.

The product was pricey, but the cost of new tank and the labor to R+R it was MUCH more!

Hope this helps


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Old 04-27-2016, 09:04 AM   #17
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1978 31' Sovereign
Botgek , Washington
Join Date: Jan 2016
Posts: 23
Originally Posted by dbj216 View Post
I purchased my new gray and black water tanks from Inca Plastics. They took my order and delivered as promised. Download their on line catalog and see if they don't have the mold to make the tank you need.

How much did it cost? I emailed them last week and haven't heard back.

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Old 04-27-2016, 07:14 PM   #18
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1986 34' Limited
1966 24' Tradewind
Conifer , Colorado
Join Date: Jun 2009
Posts: 2,518
Hello Ryan,

IIRC I paid about $250 a tank. I purchased two 26 gallon "T" shaped tanks that I could hang from angle irons between the frame rails. Shipping the bulky tanks was expensive as you can imagine, but they were lightweight enough for UPS ground.

I thumbed through their PDF catalog until I found the tanks that would fit my Trade Wind. These tanks were only 17" wide and that would fit in the "narrow" frame bay beneath my selected toilet placement.

I recommend you find the tank that will fit your plans and then call them to place your order. That's what I did.

By the way, installing these waste water tanks was a BIG project for me. Belly pan and old insulation down, replumb the drain lines from bath sink, shower, kitchen sink, new toilet relocated to a spot between the frame rails, hang the tanks, determine the locations where the vents and drains enter the tanks, install SeeLevel senders, do the final assembly, install new Valterra drain valves and then test for leaks, and finally build a tank cover and run heat to the "tank compartment". Big, really big. Thank God the system works as planned.

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Old 06-23-2016, 08:59 AM   #19
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1984 31' Excella
Cottage Grove , Minnesota
Join Date: Jul 2014
Posts: 47
Originally Posted by JimGolden View Post
That looks like a pretty big crack. But, let me give you, just maybe, some good news:

3M makes a glue that will glue polyethylene. You won't see it at Home Depot or Lowes. You will need to find a 3M Sales Rep. It comes with this nifty neato squeeze tube that meters out the resin and the hardener in the exact ratio at the same time (a double barrel squeeze tube with different sized barrels).

The fresh water tank in my 34' had a crack in the top of the tank about an inch long. I got some white polyethylene sheet, about 1/4" thick, and cut a 3" by 3" square. I then roughened up the top of the tank where the crack was with sandpaper, and did the same to the 3x3 square, then glued them together with the 3M miracle glue. Ten years and 25,000 miles later, no problems of any kind.

I don't forget the ID number of it as it's been so long. You can probably Google it and find out. But, 3M does make a glue that will glue this tank.

Best of luck,
This is the comment I was hoping to find! Thank for the detailed answer. We are just uncovering our tanks and were wondering what to do if there were cranks or leaks.


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