Cracked Sanitation Hose.

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Russell Egge

Well, it was a nice hot day in Wickford so I began the process of pulling the old holding tank and all the sanitation hose off in an effort to eliminate an order problem. And yes I did find the (or maybe one of the) problem(s) The hose that takes the waste for the tank to the deck pumpout and macerator is about 3 feet long and makes a 180 degree bend before connecting into a PVC Y fitting. Either because of the sharp radius or maybe because there was water in the line during the winter we bought the boat, there were multiple cracks (30+) in this short section of hose. There were also rust streak associated with most cracks indicating there they were leaking. This section of hose always has liquid unless the tank is empty. Everything is off and now I'm trying to fit odorsafe hose over the fittings. That stuff really is hard to work with. K-Y lubricant helped but I need a hairdryer to finish. Any one else had cracking in this hose? If so we need to tell Hunter. Russell
 
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jim Oursler

soak hose in steaming hot water

hoses need steaming hot water. the hair dryer is too hot and causes cracks.. Been there, done that.
 
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Marcus

Sanitation hose

Agree with hot water when installing. Also suggest "straightening" the little coil you bought by placing your new hose over a stout rake handle for a few days. Mine is now in the living room for a few days prior to install.
 
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Jeff Bacon

Try this....

I, too had the same problem, and, after the fact was told not to heat with a hair dryer (I already had done so). What I would do now, is fabricate a 180 degree "U" from PVC, and stick 2 short but straight sections of hose on either end. Eliminates the bending, heating, skin off the forearms routine, and should be an easier job overall Jeff
 
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Peggie Hall/HeadMistress

Overheating hose to bend it can damage it

Heating hose to make it bend tighter than it wants to bend willingly can cause a hose to kink, collapse or split. Freeze damage may have compounded the problem, but since it happened where there's a tight radius in the hose, I suspect heat damage is the real culprit. I hope you didn't use heat to bend your OdorSafe hose--that you broke it and inserted inline radius fittings instead--'cuz heating OdorSafe to force it to bend not only weakens the hose, but it cracks the plastic "skin" bonded to the outsided of it that's the odor barrier. If your tank fittings are gray PVC, it's impossible to get the hose onto 'em without overheating it...'cuz although they're nominal 1.5" thread by 1.5" barbed, gray PVC fittings are actual 1.5" thread by 1 5/8" barbed. Replace the fittings with either nylon or marelon fittings, which are actual 1.5" x 1.5".
 
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Russell

Do all 376 models have this problem?

Remember the cracks were in the original black sanitation hose from the factory. Anyone else have this problem? I haven't put the odorsafe yet, I'll try this weekend. Peggy whats the best way to heat the odorsafe hairdryer or hotwater (what temp water)? Russell
 
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Peggie Hall/HeadMistress

Blow dryer is ok...

Just be careful to warm it only enough to soften it a bit...not enough for the plastic skin to start crackling. Which is why I don't recommend using a heat gun unless you really know what you're doing with one...it's too easy to overheat ANY hose with a heat gun. Don't heat it all to bend it...break it and insert radius fittings.
 
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Peggie Hall/HeadMistress

What I would do, Jeff is

Buy radius fittings, which are available from any hardware store or plumbing supply. The only things that aren't are the hose connectors, which SeaLand sells (they also sells the radius components, but for about 10x the price at the hardware store or plumbing supply). Call 'em at 800-321-9886 Bending pvc isn't quite as easy as it sounds...'cuz unless you have the proper tools, the radius diminishes in the bend.
 
Dec 2, 1999
15,184
Hunter Vision-36 Rio Vista, CA.
alternative to Sealand hose.

You may want to consider the black Shields 101 No-odor hose that is sold at West Marine. We have had this stuff on our boat for over 10 years and have not had any problems since changing to it. It is a LITTLE more flexible and is a good alternative to the Sealand hose when you have tighter bends. This may be a good alternative where there are short run with tighter bends.
 
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Eric Swift

Radius fittings.

Peggy - I have followed your advice and am replacing with Sealand and nylon radius fittings. I have not found 45degree bends or other options than ninties in nylon. Do they exist and if so where? Is there another way to go through a tight section requiring a number of quick turns. I am used to using rigid pipe in plumbing situations and these areas would be easy in rigid pvc or some such, rather than cutting short lengths of hose with multiple hose clamps etc.
 
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Peggie Hall/HeadMistress

SeaLand has pvc 90s and 45s

Also tees and wyes. Call 'em as 'em to fax you the fittings page from their "Retail Products Guide". 800-321-9886. If your plumbing is that convoluted, you might want to investigate how to straighten it out, even if it means moving the tank.
 
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Eric Swift

What I've learned!

Well - After two very long days, much swearing and busted knuckles, here is what I have learned. Not all 11/2 Nylon fittings are the same size, the hose fitting end of the elbows and adapters varied as much as 1/8 inch which made fitting the Sealand hose on very difficult on the adaptor (pipe thread to hose fitting). Also, heating with a hair dryer is better than nothing but not nearly as good as using good hot water. However, if you heat too much of the hose it turns to rubber band consistancy and crimps easily and is hard to straighten. So the answer is to dip the ends you are fitting into very hot water and then quickly slide them on. When they cool they can not be budged. Also, be careful pushing hose through the bulkheads because the outer membrane puctures fairly easily and Peggy says this is what keeps the hose gas impermeable. The hose cuts well with a hack saw and will bend almost none at all so Peggy is right, use fittings. Peggy - thanks for the help, I am done and hope to never replace hoses again on this boat!!
 
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