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Pack Mule 01-11-2016 08:50 PM

3/4"hose selection
I'm looking at replacing most all of 3/4" hose on the boat . I would like to keep it all the same if it makes sense .
1.from thru hull to strainer, to pump to electric head .
2.from thru hull to pump to wash down faucet
3. from thru hull to strainer to generator .

Can I go with one brand and style for all of the above ? If so or not what would be best for each application ? I'm on freshwater .

djmarchand 01-11-2016 08:59 PM

All of the applications you listed for the suction side of the pump the hose needs to be able to withstand vacuum. So use the black, wire reinforced hose.

In one case, like on the pressure side of the pump to the wash down faucet, it is ok to use reinforced clear vinyl hose but not on the others. But wire reinforced hose will work but is more expensive.


Capt.Bill11 01-11-2016 10:08 PM

Head Hunter Banzai Pipeline hose, white reinforced sani hose, Tiger Flex, etc.

Take your pick. Just stay away from your basic nylon webbing reinforced clear vinyl hose. Sometimes known as "red tracer" hose.

HiDHo 01-11-2016 10:26 PM

Marty, go to Home¬*|¬*Trident Marine | Hose, Wet Exhaust and LPG Systems

Brooksie 01-11-2016 10:30 PM

I have had good luck with 3/4 white sanitation hose for all those situations. It has a PVC helix instead of wire so fine for suction and no stiletto ends. So does Tigerflex but it is not a "marine listed" hose.
Either is fine for cold water. If low cost if foremost, 3/4" automotive heater hose would work too. Buy a good brand.

Capt.Bill11 01-12-2016 01:15 AM


Originally Posted by Brooksie (Post 403674)
So does Tigerflex but it is not a "marine listed" hose.


Xsbank 01-12-2016 01:43 AM

Pex is good for plumbing, just not in the sunshine. Hot water too. Shark bite connectors so you can take things apart. No more hose clamps.

HiDHo 01-12-2016 01:56 PM

But will it pass an insurance survey ?

rwidman 01-12-2016 02:05 PM

Since those are all "below the waterline" applications, I would use a hose that's rated for use below the waterline.

In a case like this, the cost of materials is minor compared to the labor even if you do it yourself and the result should last for many years, so I would use the highest quality hose available. The difference in cost will be very small spread over ten or twenty years.

HiDHo 01-12-2016 04:03 PM


Xsbank 01-12-2016 05:18 PM

My bad, reading comprehension....I have used Pex extensively throughout my fresh water plumbing and my entire heating system but I would not use it for raw water.

psneeld 01-12-2016 05:34 PM

I see no problem using pex for distributing the salt water throughout the boat...I just didn't use it between the seacock and the pump.

Use nylon fittings and valves....should be no big deal. I turn the system off when not onboard.

I didn't use it for the air conditioners saltwater system case that system had to be left on for extended periods.

dhmeissner 01-16-2016 11:00 AM


Originally Posted by HiDHo (Post 403670)


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