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Old 07-17-2012, 04:54 AM   #41
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We've used a heat gun to remove hoses from fixtures for years after being told about the technique by the shipwright we used to use. It doesn't take much heat at all. The hose never gets too hot to grab with bare hands even the moment after the heat is shut off. So I can't see how this minimal amount of heat would damage the integrity of the hose.

If you played the gun on the hose for a long time I can understand how the excess heat could damage it.
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Old 10-14-2012, 11:49 AM   #42
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I'm going thru the hose replacement exercise too. PO had installed the old hose with a couple of splices with barbed connection pieces, and I think that's where the clogs were occurring. To get the old hose off, I wound up having to cut it at the connection to the head (a Jabsco electric, 1" output fitting) but I am having a #%@&*() of a time getting the new hose on there over the end barb. I put a heat gun to the new hose, and put a little liquid detergent on both pieces, but still cannot get the hose to stretch enough to fit. Other than hiring Popeye or somebody else with a lot of muscle, are there any suggestions?
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Old 10-14-2012, 12:03 PM   #43
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Ice the fitting the hose goes on, put the hose end in boiling hot water and give it a wipe with liquid detergent.......always works for me. Good Luck!
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Old 10-14-2012, 12:51 PM   #44
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It's easy to fail to fully heat the hose with the heat gun. It takes some experience to know how hot to get it, but it should be pretty hot. Also, don't just heat the end, you want a couple inches of length heated.

"Radiator Hose Grease" is available at auto parts stoes and is a better product than sish detergent for lubrication.

Hint: When you push the hose onto the fitting, make sure it goes all the way the first time. Stop half way and you'll probably have to cut it off and start over ahain.
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Old 10-14-2012, 01:58 PM   #45
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Update. I decided that the crud that was still on the hose barb was probably not helping getting the new hose on, so I pulled it, brought it home and cleaned it up with a wire brush wheel. A piece of "test hose" goes on OK now. Turned out to be a good decision, since removing the fitting also disclosed that the joker valve inside was pretty much shot. Fitting it all back together on the boat should be a snap.
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Old 10-14-2012, 03:17 PM   #46
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Holding the end of a hose in an old coffee cup of boiling water for 20 seconds or so will soften it nicely without fear of burning.
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Old 10-14-2012, 04:50 PM   #47
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Just make sure not to serve coffee from that cup!
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Old 10-14-2012, 06:29 PM   #48
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The April issue of Pratical Sailor had test results for sanitation hoses. Trident 101/102 and Raritan Sani/Flex were highly recommended as being easy to install. The Raritan was exteremely flexible as well.

The SeaLand Odor Safe Plus, sold by WM, was listed as exteremely difficult to install. SeLland does NOT recommend heating the hose according to the article.

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Old 10-14-2012, 10:17 PM   #49
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Quote:
Originally Posted by Blue Heron View Post
Just make sure not to serve coffee from that cup!
You wouldn't waste all that nice hot water would you?
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