bayite BYT-7A006 DC 12V Solar Hot Water Heater Circulation Pump Low Noise 3M Discharge Head 2.1GPM

Wow what a great little pump draws very little power pumps approximately 1 gallon per minute in a full working load with some head. Works better than i anticipated . I thought it would be a toy pump that would barely work and fail shortly after using. But this pump works surprisingly well. Im using for solar hot water. Has 1/2 npt and works well with stainless braided plumbing hoses. Pump makes enough noise to know when its running but not loud or annoying. Great little pump. Good price. I recommend this pump. .i also use a filter before the pump.

I'm using this to pump water from the bottom of a 6ft deep pool, through 100ft of tubing (to warm up water), and about 6ft above the surface of the water into a waterfall!I connected it directly to a 20V, 5amp 100W solar panel, and it works great!Pro's:+ At least 6ft head with good flow+ Easy to connect wires to (I used liquid electrical tape to make the connection waterproof)+ Well built/ sturdy, lots of fins on the impellerCon's:- The wire that comes with it is pretty small in diameter (smaller than 16AWG), and not as long as I would have hoped (max around 3ft)- Would like to know the max Amps and voltage it is rated for (handles 20V, 5 Amps with no problem)Summary:Great little DC pump with a decent amount of power/lift/flow

[Update after 8 months]I disabled and drained the pumps (I have 3) for a few months in the winter, but left them connected and exposed to freezing temps. And we had some serious freezing this February! When I reenabled the pumps in the spring, they resumed working as before. So, reliability seems good. They run on a timer now, about 8 hours a day every day. I guess that means they've been working for well over 1000 hours so far, in outdoor conditions (though protected from direct sunlight).[Original]I got this pump for a remote-watering setup, and planned to run it off a solar panel. I'd have water pressure whenever the sun is shining, and can use that little bit of pressure to recirculate the water to cut down on algae growth. And, when the hose timer opens, the pump will also push water through the hose timer at a more-reliable rate. (Relying on gravity alone for pushing water through the timer has been unreliable.)That is, the pump will push water up to the top of the tank to recirculate through a 1/4" hose, and also down to a hose timer to irrigate through a 1/2" hose. A 1/2" irrigation riser with a "barb tee" was an easy addition to the output of this pump.The pump is rated at 12V, 0.7A, which is 8.4W, so I got a 10W solar panel. In July Texas sun, that solar panel couldn't get the pump to move. It seems the startup current draw for this pump far exceeds 0.7A, because it pulled the solar panel output down from 17V to 6V and the pump just made a buzzing noise but wouldn't spin. When connected to a battery, the pump works great and drained a bucket of water so fast I barely had time to measure voltages. If I got the pump started with the battery, and then disconnected the battery but left the solar panel connected, the pump kept running, but not as briskly.I didn't measure the current draw, but I've got some doubts about the claimed power requirements of this pump and the solar panel.I might order a higher-wattage solar panel, but more likely, I'll just run this thing off a battery with a timer (so that it doesn't run 24/7 and drain the battery), and use the solar panel to charge up the battery. This cheap-and-easy remote watering setup keeps getting more complicated and expensive!

Working well so far (4 or 5 months). Seems to be very well-made. My use is fairly limited: pumping (more horizontally than vertically) hot (120 F) water for about 10 or 15 minutes once or twice a week. I am pretty sure it would run a lot more continually with no problem. However, it is best to remember that this is not meant to be either a high-pressure nor high-volume pump. Its desirable traits are, in my opinion, that it is submersible, high(er) temperature tolerance, and low electric draw.

For a water pump, this would be a 5 star review. If that's what you're purchase is for, then by all means, its a good pump for water applications. My purchase was for a homebrew pump. I wasn't expecting anything too amazing but I was pleasantly surprised by the initial performance. The pump rate is a little low for me to get a really good whirlpool, but is good enough to keep things circulating so my heating elements don't scorch the wort.The second time I used the pump, it wouldn't start. I had to take it apart and clean it again before it would get going. I thought maybe I didn't clean it well enough after the previous use. At the end of that brew day, I cleaned the pump and decided to leave it disassembled until I needed it again.On the third use, I reassembled the pump, connected all my hoses, plugged the pump in, and it wouldn't work. I had to disassemble, turn the impeller a few times to get it going, then it took off.So, for what it is, it does a decent job. Its super quite and has no issues with wort break material and smaller bits of pellet hops. I recommend a hop spider just to keep larger hop particles from clogging the pump. If you're looking for a homebrew pump, this is a good entry level unit to get you going. Just be sure to clean it well, and check rotation before connecting everything.

Bought this to use to vorlauf my wort in the mash tunn, and it works perfectly. It can handle the heat, and pumps at a nice, slow, steady rate without disturbing the grainbed. And it's practically silent. I have seen others using the $150 chugger pumps, and they are loud, and have to be dialed way down and restricted using your valves. For brewing 5-10 gallon batches, this is perfect, and fits all of my current tubing, so it's nice. I don't have to worry about expensive tri-clamp fittings, or switching things out. I just slip the hose right on the barbed fittings, and plug it in.