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 Catalina/Capri 25/250 Sailor's Forums
 General Sailing Forum
 Pressure water		  New Topic  Topic Locked
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Doug
Captain

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USA
457 Posts
Initially Posted - 02/08/2004 :  21:20:08  Show Profile
I'm considering installing a pressure water sytem. As I understand it I can put in an on demand pump that will turn itself on when there's a drop in pressure. Here's what I'm thinking:
An on demand pump and maybe a pressure tank mounted in the shallow storage area under the quarter berth. <i>Noeta</i> has a small hatch there under the steps. A line runs from the Fresh water tank to the pump, from there it splits into a line that feeds the sink and a sprayer in the cockpit. I could filter the line going to the sink, but the other line is for post swim rinses and general clean up.
The power would be ran through the panel, so most of the time the system would be dead. We'd turn the system on when needed.
Anyone using a system like this?
Doug - #1913 Noeta
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dlucier
Master Marine Consultant

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Virgin Islands (United Kingdom)
7583 Posts
Response Posted - 02/08/2004 :  21:42:59  Show Profile
Doug,

Oscar over at the C250 forum installed a simple knee switch activated inline pump to provide water at the faucet.




Here's the [url="http://www.catalina25-250.org/forum/topic.asp?TOPIC_ID=5003"]Link to Oscar's Topic[/url]
Edited by - dlucier on 02/08/2004 21:44:08
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Earl Landers
Navigator

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USA
157 Posts
Response Posted - 02/09/2004 :  00:48:32  Show Profile
Doug,
While I don't have a pressure system on my boat, almost every RV out on the road uses this type of water system. My 5th wheel trailer has a water tank, a demand pump and fixtures that water is delivered to. There is no "Pressure Tank" between the pump and the fixtures. There is a outside shower for clean-up before entering the trailer. My demand pump is a Shurflo and looks like this one.
This particular pump delivers 3.5 gal/min and uses 9.9 amps when running. The pump shuts down when the presure side reachs 45 lbs. The pumps use a 3 or 4 chamber diaphram pump that can be run dry for extended periods of time without damage. I don't remember the tank size in our boats, but it isn't going to last long at that rate.
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Leon Sisson
Master Marine Consultant

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USA
1893 Posts
Response Posted - 02/09/2004 :  02:35:08  Show Profile  Visit Leon Sisson's Homepage
Doug,

In my 1979 C-25, I've installed a pressure water system that is functionally equivalent to the one you described, the only difference being two sinks and no washdown hose. Rather than what you refer to as a "pressure tank", I used a one pint or so pressure accumulator, which greatly reduces pump cycling, and is a good thing to have. I mounted a Shurflo demand pump (similar to the one Earl shows), the accumulator, and a strainer to the underside of the quarterberth platform sort of forward and outboard, where it's easy to get to, but out of harm's way. The pump is on its own circuit breaker, so as you mentioned, it can be left depressurized when not needed.

-- Leon Sisson
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.