Broken black water pipe

Question

I have a 2013 Keystone Springdale 179QBWE and a stump had a disagreement with my black tank waste pipe. There is a crack at the bottom of the pipe where it seems to exit the black tank. It looks like it might be in the glue or sealant used to mount the pipe to the tank but I don't know. My question is "what kind of connection is there between the pipe and tank"?
I've seen you tube videos where it looks like it is a slip fit with an o-ring and then sealant around the outside. Others where it seems like just the cement bond is there.
If I can get this info, I can determine if I can fix it myself or need to take it to a shop.
Also, what is a source for the ABS fittings including a new dump valve and mounting brackets?
Thanks in advance for any help on this. Mike

jdc1 · Answer

Most of the parts are available on Amazon or through CW. Etrailer also has GREAT pricing on parts. All the ABS parts can be had at any big box hardware retailer. You might search the internet to which fittings match what you have, or post a picture or two here for reference.

schlep1967 · Answer

Can you post any pictures of what the problem area is? Maybe you will get more responses.

barneys · Answer

Often the fittings on the water and waste tanks are "spin welded" into place. They are not removable without breaking the weld and, as far as I know, are very difficult to replace because most glues and caulks will not stick to the tank material.
Were it me, I would leave it up to a dealer or RV repair facility to do the work.
Barney

mobeewan · Answer

A picture might be help to determine what to do in order to do the proper fix.

ktmrfs · Answer

If the tank is black it is likely ABS, (most black/grey water tanks are ABS) Off white is usually polyethalene which needs spin welds.

If it is ABS and the pipe is black ABS (likely) you may be able to cut and replace the broken section with ABS pipe from hardware stores. They use the same ABS pipe used in houses. And since the pipe isn't under pressure if it is a narrow crack grind up some section of ABS pipe, mix it with ABS cement, and fill the crack. it will set and harden quickly. if he crack is in the tank itself, if you can find a section of flat ABS you could use ABS cement to solvent weld it to the bottom of the tank for at least a temporary fix.

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Broken black water pipe

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