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Black tank basics [message #61486]

Sat, 24 October 2009 17:44

Dennis S

Messages: 3046
Registered: November 2005

Karma:

Senior Member

I have never worked on the plumbing system of an RV and I need help and advice on my plans for repairing the black tank on my 73, 23ft, with side bath.

The tank inlets for the shower drain and the kitchen/bath sinks were welded to the tank top, but both had developed cracks and weld failures. I have removed these fittings and the tank has developed cracks in the web between the inlets.

http://www.gmcmhphotos.com/photos/showphoto.php?photo=31250
http://www.gmcmhphotos.com/photos/showphoto.php?photo=31260

I have drizzled Loctite Plastic Adhesive (says it works for polypropelene) into the cracks and am letting it dry. If it does not hold I was considering gluing on a thin plastic patch or finding a plastic welder to make a repair.

A local RV dealer had rubber fittings which I understand are used for attaching drain line to holding tanks so I plan to insert those in the existing holes.

http://www.gmcmhphotos.com/photos/showphoto.php?photo=31259
http://www.gmcmhphotos.com/photos/showphoto.php?photo=31261

Plastic 1 1/2" pipe inserts into the rubber grommets and from there I thought I would use rubber plumbing fittings from Lowe's to attach to the existing drain pipe.

Does all this seem reasonable?

What do you do with the Thetford dump valve? Does this get replaced if I eventually go to a macerator?

http://www.gmcmhphotos.com/photos/showphoto.php?photo=31251

Thanks,
Dennis

Dennis S
73 Painted Desert 230
Memphis TN Metro

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[Message index]

		Black tank basics By: Dennis S on Sat, 24 October 2009 17:44
		Re: [GMCnet] Black tank basics By: USAussie on Sat, 24 October 2009 18:29
		Re: [GMCnet] Black tank basics By: Dennis S on Sat, 24 October 2009 20:57
		Re: [GMCnet] Black tank basics By: USAussie on Sat, 24 October 2009 21:12
		Re: [GMCnet] Black tank basics By: WD0AFQ on Sat, 24 October 2009 21:26
		Re: [GMCnet] Black tank basics By: Mr ERFisher on Sat, 24 October 2009 19:58
		Re: Black tank basics By: WD0AFQ on Sat, 24 October 2009 20:09
		Re: [GMCnet] Black tank basics By: USAussie on Sat, 24 October 2009 21:10
		Re: Black tank basics By: Ken Burton on Sat, 24 October 2009 21:14
		Re: [GMCnet] Black tank basics By: Tin Gerbil on Sun, 25 October 2009 03:29
		Re: [GMCnet] Black tank basics By: comcast on Sun, 25 October 2009 12:25
		Re: [GMCnet] Black tank basics By: Tin Gerbil on Sun, 25 October 2009 16:01
		Re: [GMCnet] Black tank basics By: Jerry Holloway on Sun, 25 October 2009 11:39
		Re: [GMCnet] Black tank basics By: Tin Gerbil on Sun, 25 October 2009 13:19
		Re: [GMCnet] Black tank basics By: Dennis S on Sun, 25 October 2009 13:58
		Re: [GMCnet] Black tank basics By: emerystora on Sun, 25 October 2009 13:32
		Re: Black tank basics By: rgleas on Sun, 25 October 2009 17:10

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