Installing white sanitation lines ?

M

Monterey10

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12830
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I've always struggled getting the white sanitation hoses onto the tank and head fittings. I used a torch to heat the hose, to get it 3/4 of the way onto the fitting. It cooled and appeared permanently attached.

I need to replace the hoses on my new boat project. Is there a better way to get the hoses on the tank, head, fitting connectors?

Thanks in advance.
 
Okay, I found an article that said to dip the hose ends in boiling water. Is this the best way?
 
A hair dryer works well too. Whichever way you heat it though, get it on the fixture quickly because it does cool off and contract fast.

Bob
 
Be careful not to overheat the end of the hose and ruin it's construction. Then, when it cools, it shrinks onto the fitting and that's how the hose becomes "permanently" fused to the hose barb fitting. The use of a hair dryer is recommended over using a heat gun; it won't get the hose hot enough to damage it. You just want to soften it up a little - not a lot.

K-Y jelly helps too; it lubricates the hose barb to allow the hose to slip on more easily, and it evaporates over time and disappears all by itself.

[:-shake][:-shake] Just don't leave the tube of it laying around on the boat where the Admiral can find it - you may have a lot of explaining to do... [-crzwom] [-crzwom]
 
I use a heat gun, not a hair dryer, but I use it on the "low" setting when I need to watch the heat. For hoses, I use "Radiator Hose Grease" from the auto parts store. I figure since it's made and sold for hoses, it should work well and there's no chance of a chemical interaction with the hose that might break it down over time.
 
I used a heat gun also. The hair dryer we have on the boat took way too long to make the hose soft
enough to get it on the fitting.
 
I used a heat gun to soften the hose end and I lubricated the barb with dish washing soap. You just have to be ready to jam the hose on as soon as you kill the heat gun. Speed is important. DO wear gloves because it will improve grip on hose and hose may be hotter than you think.
 
Heat gun on low works. We know in Winter sucks to do that work. When the weather warms up and rubber gets a little bit soft usually I rub caulk or 5200 on both sides and really works good. I learn that years (28) with an old sailboater. GOD keep his Soul in good place.
 
I used a hair dryer and non-barbed fittings where I had hose. I used 1 1/2 inch PVC pipe where I could, which was about 95% of the runs. I used high pressure fittings on the PVC for the extra lenght of contect to the PVC pipe.
 
Sealand makes an adapter, part #307341513 that lets you connect 1.5" hose to pvc and makes life much esier
 
Use the right fittings. Sealand hose requires the use of Sealand fittings. They are not barbed.
I have the part numbers if you need them.
 
+1 I replaced the hose in our forward head last spring with Sealand hose. I have the Sealand Traveller heads and the new hose slipped right on the fitting and like Gary said no barbs.

Good luck
Niles
 
I have rubber hoses. I'm assuming the connections are barbed. So, from what I gather, the white hose don't work in the barbed fitting. This would explain the problems I had installing them on the prior boat.
 
White hose will work on barbed fitting except it's a real ?itch to get them on. I used barbed fittings for years before I found the non-barbed. I use dish washing liquid and a hair dryer even on the non-barbed.
 
quote:
Originally posted by Monterey10

I have rubber hoses. I'm assuming the connections are barbed. So, from what I gather, the white hose don't work in the barbed fitting. This would explain the problems I had installing them on the prior boat.

Click to expand...

I'm sure there is more than one brand of "white hose". The white hose I used worked fine on barbed fittings.
 
I searched for the non-barbed fittings but couldn't find the one I needed. I have the Sealand Odorsafe hose, but I need a 90 degree fitting that has the 1.5" threads on one end to connect to my holding tank. Has anyone seen these before (non-barbed on one end, threaded on the other)?

I spent 5 hours today trying to pull the old hoses out and finally I realized that for some reason the original hoses were installed right next to a sink drain. The issue is that they zip tied the hoses together and I have no way to get to the zip tie. With the zip tie, the hose won't budge. Looks like I'll be adding a new deck plate in the bathroom floor so I can snip that zip tie off and pull the old hose out and run the new hose. :(
 
Use a threaded pvc 90 degree elbow with a male adapter, (sealand pn 341425)
 
The black Marelon fittings by Forespar run true to size and are comparatively easy to work with. Marelon is black in color and is a UV-resistant nylon material.

http://www.boatfix.com/shop3/store/comersus_listOneCategory.asp?idCategory=25526

Avoid the gray pvc fittings from hardware stores or Home Depot - the hose barbs on them are all oversize and it is very difficult to get a hose onto them.
 
The boat I'm working on has the gray fittings. I'll see if I can put on the Maralon fittings.
 
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