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Smawgunner
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# Posted: 1 Feb 2017 09:55pm
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Ok, I have my water system figured out except for the pump. I have a 40 gallon "cistern" inside the cabin. I'm pumping in water to that from a rain barrel using a heavy duty pond pump. I visit the cabin by myself usually 3 times a month. I have two sinks and a shower. I have electricity so I'm going to use a 16 gallon electric hot water tank. The system will be drained in the winter as I don't visit as often. So given that description,...what pump would be best for my application?
Thanks!
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Just
Member
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# Posted: 1 Feb 2017 10:38pm
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A surflow 3 gal. per min. 110 volt pump would work .about 100$ no pressure tank needed..
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darz5150
Member
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# Posted: 1 Feb 2017 10:56pm - Edited by: darz5150
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We have 55 gallon tank and use shurflow 1.8 GPM pump. But its 12 volts DC.
With your tank that would give you about 22 minutes of run time before you drain your tank. We have a shower,kitchen and bathroom sinks and an RV toilet.
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darz5150
Member
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# Posted: 1 Feb 2017 11:00pm
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http://www.small-cabin.com/forum/3_6305_0.html
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Smawgunner
Member
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# Posted: 2 Feb 2017 11:06am
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Thanks for the input! I did find that link but it was a year old and I didn't want to resurrect it plus there may be new technology out there.
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Atlincabin
Member
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# Posted: 2 Feb 2017 11:07am
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Shurflow will work, but I would not run it for an entire drum of water, as they are designed as intermittent pumps. I have a similar setup (barrel of water with shurflo pressurizing my system) and it works fine for everyday use. I do recommend including a pressure tank (about $100) so that the pump does not cycle on and off every time you crack the tap.
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Smawgunner
Member
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# Posted: 2 Feb 2017 08:33pm
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How big are those pressurized tanks? Space is limited.
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bldginsp
Member
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# Posted: 2 Feb 2017 09:38pm
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Pressure tanks come in all sizes. The smaller the tank, the more frequently the pump will operate, and it's switching on and off that eventually kills pumps, not run time. The tank can go outside so long as it's protected from freezing.
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darz5150
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# Posted: 2 Feb 2017 10:18pm
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Quoting: Smawgunner Space is limited.
I also had to deal with limited space. Do not have a pressure tank. I put an on/off switch in the bathroom, and one above the sink in the kitchen. We simply flip the switch when we need water.
We have lived in our cabin full time for a little over ten years now. I have only replaced the pump one time. So we are on our 2nd pump. The pump I replaced still worked, but got a small leak in the housing because a small sliver of ice got in the feed line when the heat tape on the line wasn't plugged in.
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Atlincabin
Member
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# Posted: 4 Feb 2017 09:51am
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As mentioned, pressure tanks come in all sizes. Typically they are steel with a rubber membrane inside. However, you can make your own using a length of PVC (schedule 80) pipe. Just make it the size/shape you want/need. Take an old bicycle tube or something similar and inflate it just a bit, stuff into the top third or half of the PVC pipe (so it looks like intestines crammed into the pipe), cap the pipe and there you are! The point of the pressure tank is to have the water pressurize the air in the top of the tank when the pump is running, which then provides line pressure while the pump is off. You can build this without the inner tube (just a head space of air), but eventually the air gets dissolved in the water and the tank becomes ineffective unless you occasionally add air to it.
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creeky
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# Posted: 4 Feb 2017 11:29am
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I've used the Shurflo for years. They have a pressure switch so they only run when they feel the need. Kind of like me.
The new "revolution" 4008 is a work horse. The older 2088s have held up for me too. I have transfered 100+ gallons at a time. Plus they will run dry for days. Don't ask me how I know.
Lots of replacement bits available. i cracked a housing with a solid freeze up. Twenty bucks and it was back in business.
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Smawgunner
Member
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# Posted: 4 Feb 2017 01:01pm
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Thanks all! hope to have my system up and running by late spring.
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