Aquatec 5851-7E12-J574 0.7 GPM 60 PSI 3/8 inch JG 115V Delivery/Demand Pump with Cord

The media could not be loaded. This is exactly what I was looking for. I have a well system and the osmosis system was not keeping up with the refrigerator even though It did pretty good at the kitchen sink with the two tanks. I bought this demand pump put it in between the two tanks and the water pressure add both the refrigerator and the sink is fantastic. Not much more to say just buy this and install it and you’re good to go. The first tank is at about 8 psi empty. The second tank is at about 35 psi (empty)The pump has an key adjustment so you can scale back the pressure if you want to after install. Super quiet… by the way (and mine is not bolted down.

This is an excellent pump, cuts in half the time it takes to fill a glass from the refrigerator. As it came, the pump comes on when the pressure drops to 40 psi and off at 52 psi. There is a small screw that will adjust the cutoff pressure up to 60 psi. My only complaint was the noise, and boy, was it LOUD, even down in the basement under the kitchen. Aquatec was very good at suggesting solutions, none of which helped. I put the pump in an acoustic foam-lined enclosure, and foam insulation on the feed line. Better, but still loud. Seemed to be some pulsing at the RO water faucet when the pump was running and the feed line was vibrating. Could there be some back pressure? So I put a check valve between the RO feed and the pump inlet. I went upstairs and tried running water from the refrigerator. At first I thought the pump wasn't running, though the pressure stayed up. SILENCE!!! It was running, but I could just barely hear it if it was absolutely quiet in the kitchen. Wow, what a difference. There is a little bit of a restriction in the check valve, so it takes a little longer to top up the tank, and I know there is a check valve in the pump, but you have to hear the difference to believe it. One happy camper! (Using 3/8" line with a 3 gallon expansion tank, got the check valve with the widest body for less of a restriction: https://www.amazon.com/dp/B0CWVWDG81?ref=ppx_yo2ov_dt_b_fed_asin_title .)

So I installed a reverse osmosis system for my kitchen sink and my refrigerator water/ice.I installed the system in my basement just so that the osmosis water storage tank stays cool instead of putting it right below my sink upstairs. Even though I had a booster pump which really only creates osmosis water faster, the 30-ft run made filling a 12-oz glass take about 18 seconds on the sink faucet. Even though it's 30 ft, there was only about 5 ft of rise nonetheless. This totally helped with the pressure, and now I can feel that glass in 8 seconds! This thing works great, but you really need an accumulator tank (or storage tank) so that your ice machine doesn't make this thing turn on and off repetitively while it's filling the ice tray. The reason why it does that is the internal pex lines in the refrigerator are tiny 1/4" lines and they restrict the flow, so the pump shuts on and off repetitively due to flow restriction. Very harmful for the pump over a long term. You can buy a $40 small accumulator, or just buy a $35 Ipring reverse osmosis tank that will hold over 3 gallons of water, that way you can turn your sink and fill glass after glass before even hearing this pump turn on. Also there isn't a hard shut on / shut off like there would be if you had it directly inline to your RO faucet on the sink and the fridge, so much less vibration.I would also get a pressure gauge for 10 bucks and tee it in right after the output of this pump. You need to know what pressure the pump kicks on at since you have to increase the pressure of your $35 accumulator tank to about 5 psi below the kick on pressure of the pump. For example, most of the time these pumps cut in at 40psi (verify like i said with a pressure gauge). If thats the case you need to inflate your Ispring storage tank to 35psi (factory is at 7psi) and youre good to go. Just tee in the accumulator/storage tank somewhere on the output side of the 3/8" line on the way to the fridge and the sink (Yes, upgrade your 1/4" line from from the pump output all the way to your faucets...)and your jackhammering problems, rattling tubing in your joists, etc will be nearly gone.

Very quiet.

Great pump. Quiet and works well. Put it after the RO and inline with an additional storage tank. Now there is a LOT of pressure. Installed it in the i-joists with my RO system. Pump runs maybe 10 seconds after getting water just to build the pressure back up.Only downside is there is NO good documentation on how to adjust the allen screw.Does screwing it increase shut off pressure or increase turn on pressure?

This pump worked properly, boosting pressure to 75 PSI to the ice maker and RO water faucet, but the water smelled and tasted like rubber. Maybe it will reduce with time but why design a delivery pump for purified water that adds contaminates? This is a terribly designed pump. The water is not drinkable even after many gallons of purging.

This pump, coupled with the Aquatec Pulsation Dampener Accumulator Tank (recommended for booster pumps) is an ideal combination for those scenarios where a Reverse Osmosis System has a long way to distribute water. Ours is installed in a basement, about 25’ from the faucet, and 20-50’ from 3 refrigerators. Designing our home, we did have the plumbers run 1/2” PEX from the R/O to each refrigerator and the faucet. Our R/O system is designed to put out good flow and pressure, and it does but the distance slowed the supply flow down. Now the R/O water comes out fast and steady at every point of use. The pump is very quiet, but if installed where vibrations can resonate through wood or other mountings, use some soft rubber isolation pads. We can’t even detect its running for anywhere upstairs. The dampener tank is very helpful if using these pumps the and R/O water goes to a fridge, as the flow is sometimes intermittent or low and some ice makers are problematic with that. The John Guest push lock fittings are perfect for the common 3/8” or even 1/4” tubing. The Big Bonus……These products are made in the USA!!!! Great buy!