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    Auto fill plumbing

    Thanks for the thought. Yeah, I know they are made in a huge amount of specifications. I didn't use the spring plunger variety, assuming that the pressure would never be enough. I think I did neck it down to 1/2" but might be 3/4". I used a stainless metal "swinging gate" valve. Some of...
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    Auto fill plumbing

    I put on an auto fill on my AG pool last year. I built it into the deck, and plumbed it out. But now I realize it doesn't actually work as I had hoped. The problem is that being plumbed into the return injector line, I needed obviously to put in a check valve so that the pump wouldn't just...
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    Stenner liquid chlorine pump - How to choose and install

    Yes, I'm interested also. I've only been running my Stenner pump for a year, and no problems whatsoever. I also have a completely shaded system, and less heat. I also don't use anything stronger than the 6% bleach. Can you tell us more about if the cracks are in the PVC or in the black...
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    Stenner liquid chlorine pump - How to choose and install

    Thanks Steve. Think I understand this pretty well. .... Well, who am I kidding. probably I understand it well enough so that I will be able to figure it out as it happens! pk
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    Which pump do I choose of these two?

    Thanks for taking the time to give me a long answer. Interesting, I am on another woodworking forum and there are lots of electrical engineers on that forum and while I may well be misunderstanding, I did not know that single phase motors were able to be variable speed with such a drive...
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    Which pump do I choose of these two?

    I'm not an electrician, but my understanding is, basically all 3 phase motors are variable speed, thru, as you say, varying frequency. Basically single phase AC motors are NOT variable speed. So, not saying that this is what is going on, but if it is a variable speed motor, in general, it is...
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    Which pump do I choose of these two?

    Thanks Bizzle I do understand I need to wire the SWCG in such that it is not going without the pump. That can be done, but yep, will need a bit of figuring out. If I couldn't, I guess I'd have to run a different way. As to why I like DC pumps? DC motors are great motors. They used to be...
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    Which pump do I choose of these two?

    Thanks VERY much Bizzle and Chuck. All very good points. Yes, I do have inverters of course, and yes, I have 220 and 110, all 60 hz. I suppose you are right about a PV sensor that might indeed save my system if it is cloudy for too long. Just being off the grid makes one VERY careful about...
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    Which pump do I choose of these two?

    Hopefully the above file can be read Chuck.
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    Which pump do I choose of these two?

    Chuck, couldn't seem to get the PDF to save here, so hopefully taking a picture of it, and I can figure out how to post a picture.
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    Which pump do I choose of these two?

    Hi Chuck, thanks. I very much appreciate your response. As Marty mentioned earlier, I DID have a thread about Solar pumps. I didn't get a lot of replies, as I find, most folks of course don't bother going solar on their pumps, as there really aren't a lot of options that are easily found...
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    Which pump do I choose of these two?

    Thanks Marty and Mayorb Yes Marty, I had an earlier thread months back asking about Direct solar pumping. I suppose I could have added this to that, but this question isn't about whether or not to use direct pumps. That was decided. This was whether a 2/3 hp was adequate or did I need to go...
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    Which pump do I choose of these two?

    I’m looking to install an AG pool this spring, ~15,000 gallons. I’ve dozed the site and am ordering a pool soon. I’m looking at a DC VS pump that is 500 watts (2/3hp), or one that is 900 watts, (about 1.20 hp.) (I’m off the grid by the way!) The 500 watt pump, supposedly pumps maximum 4400...
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    Anyone ever heard of these MFG?

    in a different industry, (sewing industry) I used to manufacture stuff in the US. We went offshore in the 80's. I've worked in MANY factories in China, Nam, Laos, etc. They CAN and do make quality products. It really depends on what the buyer wants often times. If they want cheap, they can...
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    Air in roof solar heater

    Hi John. If I'm understanding you correctly, you think air has gotten into the lines in your solar water heating. Not unusual, and often a water circulation system for heating is fairly low pressure so it might well not "flush" the lines just by turning it on. If there is air in the line, it...
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    Cheap Chinese Variable Speed Pump 1.5HP

    I worked for 25 years making stuff in China. Made for another 15 here in USA first. Our stuff was pretty darn good out of China. Just can't go and say, "make this" and make it at this price. You will often get junk. You have to really work with them, have a person there in the factory if...
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    Direct solar pumping

    Well, yep, not great wind, but also windmills are GREAT for bringing water from even deep in a well, being a piston pump. you can pump water from 1000 feet deep if you needed too. But they can't pump very well without constant maintenance if you are pumping above the top of the windmill. And...
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    Direct solar pumping

    Thanks guys. I'm still looking at Sun Pumps. Somewhat curious about Sun Ray also. (Claims made in USA, and is obviously really geared toward pool). A bit cheaper at $900 for pump and controller/motor, (brushless). I'll have to do a lot of reading and talking to these guys. I think Lorentz...
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    Direct solar pumping

    Thanks tlevy, and needsajet. Good to hear you have had decent service from your Lorentz. I've had Lorentz water pumps for about 20 years I think. But those were hi pressure pumps. (I have about 185 feet of head). Their line of pumps for that application are probably more competitive with...
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    Direct solar pumping

    I'm going to put in a AGP this winter, (~15,000 Gal) in Northern CA. I just joined the site trying to learn more about pools. I'm off the grid at my ranch, and while I COULD tie into my main AC inverter system, I'd rather not. I'm hope to just put in another mast near the pool site and power...
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    Supplemental solar pool pump and filter??

    being a new member here today, take my input with a grain of salt. But I do have a fair amount of experience with solar power. I have a solar panels on my house in Berkeley, but I also am totally off the grid on my ranch. I have a complete woodshop powered off the grid. As others have said...