Kamoer NKP Low Flow Peristaltic Pump 12V DC DIY Liquid Small Dosing Pump for Aquarium Lab Analytical 3mm ID x 5mm OD

I'm using 6 of these pumps (one per pot) in an ESP32 controller based plant watering system I designed and built.I've got a container I'm using as a water reservoir, and use flexible silicone tubing to deliver water, with a tee at each point where I've got a pump connected.I'm driving these pumps with only 5V instead of the 12V spec, and they work fine (at a lower flow rate, of course). I've calibrated the pumps to know their actual flow rates (they vary about +/-15 percent from average). Although there is unit-to-unit variation, they are very repeatable over time once calibrated.I've got soil moisture sensors in each pot, so with the appropriate number of days between waterings, and when the soil reaches the appropriate level of dryness, I command these pumps to deliver a specific amount of water (different for each plant).I've been using them for several months now, and all are still working perfectly.

I live in the deep South where it's hot and humid. We use the A/C for 10 months of the year. If I forget to put vinegar down the condensate drain every month, it clogs. After dealing with clogs a couple times this year, I decided to use this peristaltic pump to deliver white vinegar into the condensate drain every week. I have it wired to a zigbee relay, and then entire system is controlled by a Hubitat hub. One end of the tubing from the pump sites in the condensate drain, and the other end is in gallon jug of white vinegar. Every Saturday morning, a Hubitat rule turns on the relay for 30 seconds and then shut it off. This delivers about 50 mL of vinegar down the condensate drain. So far, it has stayed clear with no clogs.

After having the unit for 6 months it has needed a few hose replacements and the shaft needed to be roughened to function again due to the hoses being a different durameter than the original it still works on a 3 hour cycle. The noise has changed pitch and is quite loud. The hoses last a month or so even with some dry running, if it was wet all the time it might have lasted longer, but for my use it does run dry from time to time. Changing hoses is quite easy and the pump flow rate is adequate for my purposes. I wish the mechanism was a little more robust so the shaft didnt need to be roughed, but I exepct this to last about a year before it no longer functions and needs to be replaced. Overall good value for money.

It has great flow rate for a such a small inexpensive pump.

Item as described, arrived faster than anticipated at a great priceCan't ask for much more than that!

Decent pump and a standard model for Kamoer. Tubing size lines up well with standard aquarium 3/16 "Airline Tubing."

Works will and is cheap

The only suction pump which really works. The biggest problem is the tube wears out & has to be replaced frequently. Either it'll start drawing in air instead of water or it'll start leaking when the tube wears out. There's no warning. It won't fit 1/4" tube from hardware stores. It only works with super expensive 3mmx5mm tube.

I have two of them pumping water to my indoor plants. They are powerful enough to have 4 drip irrigation outlets each.

Excelente para proyectos escolares o del hogar

I used this pump to remove water from an under-floor burst pipe. I ran it 24/7 from 12V batteries and it never let me down. It did get quite warm at times, but kept on running. Pretty quiet as well.

Muy práctica, la utilicé para un proyecto de posgrado y funcionó a la perfección

Unfortunate that it broke so soon after install.