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post #1 of 13 Old 11-19-2012 Thread Starter
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Rubber vs. Sanitary hose

I noticed that Don Casey's books recommend using rubber hose as the default for pretty much all water applications (except potable). He hardly mentions the white sanitary hose, except where odor is a big problem.

However, virtually all of the non-potable water hose on my boat (waste, drains, etc.) is the white heavy duty sanitary hose (Trident Vax XHD). Seems like pretty stout hose -- should replacement with rubber hose be on my long term upgrade plan?
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post #2 of 13 Old 11-19-2012
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Re: Rubber vs. Sanitary hose

First, none of the hoses are actually rubber; they are all synthetics (nitrile, neoprene, urethane, , PVC, EPDM) chosen to fit the specific application. The only thing to broadly avoid is clear vinyl.

Practical Sailor did a review of sanitation hoses. Yes, they are different from water/exhaust hoses and fuel hoses.

Trident 102/101 and Shields Poly-X are the 2 top picks. But the full answer requires reading the article. This post gives a few bits:

http://sail-delmarva.blogspot.com/20...sy-button.html

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Last edited by pdqaltair; 11-19-2012 at 07:24 PM.
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post #3 of 13 Old 11-20-2012 Thread Starter
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Re: Rubber vs. Sanitary hose

But am I running some sort of risk with sanitary hose instead of rubber hose? If so, what?
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post #4 of 13 Old 11-21-2012
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Re: Rubber vs. Sanitary hose

Rusty,

I think that Casey's recommendation is based on the premise that there's no need to spend the extra dough on sanitary hose when plain old heater hose will work.

If the sanitary hose is sound and not leaking, then I think you can safely move your worries elsewhere.

Do take the time to read the article PDQ posted, though
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post #5 of 13 Old 11-21-2012 Thread Starter
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Re: Rubber vs. Sanitary hose

That would make sense, except when I priced hose for my cockpit drains (1 1/2"), rubber house was about 3 times more expensive than the white stuff.

I signed up for a Practical Sailor subscription, but it looks like I need my first I issue before I can access back issues.
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post #6 of 13 Old 11-21-2012
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Re: Rubber vs. Sanitary hose

Quote:
Originally Posted by pdqaltair View Post
First, none of the hoses are actually rubber; they are all synthetics (nitrile, neoprene, urethane, , PVC, EPDM) chosen to fit the specific application. The only thing to broadly avoid is clear vinyl.

Practical Sailor did a review of sanitation hoses. Yes, they are different from water/exhaust hoses and fuel hoses.

Trident 102/101 and Shields Poly-X are the 2 top picks. But the full answer requires reading the article. This post gives a few bits:

Sail Delmarva: The Easy Button
PDQ-

When you say to avoid clear vinyl hose, are you including those clear hoses that are specifically rated for potable water? Some are completely clear, and some have some sort of reinforcement in a cross-hatch pattern on them.

If you are referring to these, why avoid them?

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post #7 of 13 Old 11-21-2012
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Re: Rubber vs. Sanitary hose

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PDQ-

When you say to avoid clear vinyl hose, are you including those clear hoses that are specifically rated for potable water? Some are completely clear, and some have some sort of reinforcement in a cross-hatch pattern on them.

If you are referring to these, why avoid them?
Certainly not a safety issue for potable water. Where I don't like seeing them--and have--is on holding tank vents (they permiate within a few months based upon testing) and engine lines (I've seen them for cooling water and fuel vents).

I prefer polyethylene tubing for water. It lasts longer and does not contain plastisizers (taste). But there is nothing wrong with using a material within its rating. Where flexibility is needed (shower hose) it may be the only practical choice.
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(when asked how he reached the starting holds on a difficult rock climbing problem that clearly favored taller climbers - he was perhaps 5'5")

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by Joe Brown, English rock climber




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post #8 of 13 Old 11-25-2012
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Re: Rubber vs. Sanitary hose

Any guidance as to what material would make a better tank vent line? I have the cross-hatched clear stuff.

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Re: Rubber vs. Sanitary hose

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Any guidance as to what material would make a better tank vent line? I have the cross-hatched clear stuff.
Ritchard,

If you want to keep the stink at bay longer, go with sanitary hose.
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post #10 of 13 Old 11-26-2012
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Re: Rubber vs. Sanitary hose

Rusty, the only drawback to white sanitary hose is that it is DAMNED EXPENSIVE. Other than that it is superior to rubber hoses in every way. You've got the good fortune to have all "gold plated" hose in that boat, the last thing you would want to do is throw it out and replace it with the cheap stuff.
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