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Old 09-11-2007, 09:53 PM   #1
2 Rivet Member
2007 25' Safari SS SE
Alton , Illinois
Join Date: Sep 2007
Posts: 66
1991 plumbing

I have an interest in a 91'? My question is did these models have the polybutelene plumbing or did they have the later plastic plumbing. Has anyone ever replumbed with copper?--Is this practical or remotely economical.

The "Ann Rutledge"
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Old 09-12-2007, 11:24 AM   #2
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1975 29' Ambassador
Reno , Nevada
Join Date: May 2003
Posts: 1,351
if it is gray tubing, it is polybutelene (PB). Good stuff except for the crimped connections to ABS fittings. You really don't need to replumb to replace it. Just watch for any fittings falling apart, especially in high chlorine environments (as in heavy water disinfectant).

If you see any corrosion on the fittings - most noticeable on the crimp rings - then the easiest thing to do is to replace the fitting. The Quest fittings available at most corner hardware stores are easy to use and work well.

If you do any replacements, use PEX, not copper. It is the modern replacement for the PB gray tubing. I would also suggest using some of the many easy to use fittings for this tubing rather than trying to go the crimped route. Quest, Flair-It and others work well and are much much easier to install in a trailer than crimped fittings or soldering copper.

If you replace any plumbing, you should also be able to eliminate some fittings. I think somebody went fitting happy with a template at the factory on my B-Van so they could neatly lay the pipe around nice corners. With PB or PEX you can bend it in a radius as small as 10 times the pipe diameter (5" turn radius for half inch tubing). PEX is measured like copper tubing by OD. 3/8 inch is usually sufficient for most RV needs.

Also look for the fittings that go to half inch IPT in order to facilitate connection to faucets and appliances. The standard Quest fittings for 3/8 go to this size and you can also find some fittings for 1/2 inch tubing that also adapt to half inch IPT.

You can cut the tubing with any ol' knife but a ~$15 tubing cutter does a lot nicer job a lot easier (and safer on the fingers!)

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Old 09-12-2007, 07:12 PM   #3
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1992 29' Excella
madison , Wisconsin
Join Date: Aug 2002
Posts: 4,644
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ditto what leipper said.

if yours is like my '92 you will find it has copper joints and crimp rings.

mine has been trouble free since the day it was assembled.

you call them ferrets, i call them weasels.
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